Tag: Solved problem

Solved Problem: Using the Demand and Supply Model to Analyze the Effects of a Tariff on Televisions

Supports: Microeconomics, Macroeconomics, Economics, and Essentials of Economics, Chapter 4, Section 4.4

Image generated by ChapGPT

The model of demand and supply is useful in analyzing the effects of tariffs. In Chapter 9, Section 9.4 (Macroeconomics, Chapter 7, Section 7.4) we analyze the situation—for instance, the market for sugar—when U.S. demand is a small fraction of total world demand and when the U.S. both produces the good and imports it.

In this problem, we look at the television market and assume that no domestic firms make televisions. (A few U.S. firms assemble limited numbers of televisions from imported components.) As a result, the supply of televisions consists entirely of imports. Beginning in April, the Trump administration increased tariff rates on imports of televisions from Japan, South Korea, China, and other countries. Tariffs are effectively a tax on imports, so we can use the analysis in Chapter 4, Section 4.4, “The Economic Effect of Taxes” to analyze the effect of tariffs on the market for televisions.  

  1. Use a demand and supply graph to illustrate the effect of an increased tariff on imported televisions on the market for televisions in the United States. Be sure that your graph shows any shifts of the curves and the equilibrium price and quantity of televisions before and after the tariff increase.
  2. An article in the Wall Street Journal discussed the effect of tariffs on the market for used goods. Use a second demand and supply graph to show the effect of a tariff on imports of new televisions on the market in the United States for used televisions. Assume that no used televisions are imported and that the supply curve for used televisions is upward sloping.

Solving the Problem
Step 1: Review the chapter material. This problem is about the effect of a tariff on an imported good on the domestic market for the good. Because a tariff is a like a tax, you may want to review Chapter 4, Section 4.4, “The Economic Effect of Taxes.”

Step 2: Answer part a. by drawing a demand and supply graph of the market for televisions in the United States that illustrates the effect of an increased tariff on imported televisions.  The following figure shows that a tariff causes the supply curve of televisions to shift up from S1 to S2. As a result, the equilibrium price increases from P1 to P2, while the equilibrium quantity falls from Q1 to Q2.

Step 2: Answer part b. by drawing a demand and supply graph of the market for used televisions in the United States that illustrates the effect on that market of an increased tariff on imports of new televisions. Although the tariff on imported televisions doesn’t directly affect the market for used televisions, it does so indirectly. As the article from the Wall Street Journal notes, “Today, in the tariff era, demand for used goods is surging.” Because used televisions are substitutes for new televisions, we would expect that an increase in the price of new televisions would cause the demand curve for used televisions to shift to the right, as shown in the following figure. The result will be that the equilibrium price of used televisions will increase from P1 to P2, while the equilibrium quantity of used televisions will increase from Q1 to Q2.

To summarize: A tariff on imports of new televisions increases the price of both new and used televisions. It decreases the quantity of new televisions sold but increases the quantity of used televisions sold.

Solved Problem: The Fed’s Dilemma

Supports: Macroeconomics, Chapter 13, Section 13.3; Economics, Chapter 23, Section 23.3; and Essentials of Economics, Chapter 15, Section 15.3

Image generated by ChatGPT

A recent article on axios.com made the following observation: “The mainstream view on the Federal Open Market Committee is based on risk management—that the possibility of a further downshift in the job market appears to be the more pressing concern than the chance that inflation will spiral higher.” The article also notes that: “Tariffs’ effects on inflation are probably a one-time bump.”

a. What is the dual mandate that Congress has given the Federal Reserve?

b. In what circumstances might the Federal Open Market Committee (FOMC) be faced with a conflict between the goals in the dual mandate?

c. What does the author mean by tariffs’ effects on inflation being a “one-time bump”?

d. What does the author mean by the FOMC engaging in “risk management”? What is a “downshift” in the labor market? If the FOMC is more concerned about a downshift in the labor market than about inflation, will the committee raise or lower its target for the federal funds rate? Briefly explain.

Solving the Problem
Step 1: Review the chapter material. This problem is about the policy dilemma the Fed can face when the unemployment rate and the inflation rate are both rising, so you may want to review Macroeconomics, Chapter 13, Section 13.3, “Macroeconomic Equilibrium in the Long Run and the Short Run.”

Step 2: Answer part a. by explaining what the Fed’s dual mandate is. Congress has given the Fed a dual mandate of achieving price stability and maximum employment.

Step 3: Answer part b. by explaining when the FOMC may face a conflict with respect to its dual mandate. When the FOMC is faced with rising unemployment and falling inflation, its preferred policy response is clear: The committee will lower its target for the federal funds rate in order to increase the growth of aggregate demand, which will increase real GDP and reduce unemployment. When the FOMC is faced with falling unemployment and rising inflation, its preferred policy response is also clear: The committee will raise its target for the federal funds rate in order to slow the growth of aggregate demand, which will reduce the inflation rate.

But when the Fed faces an aggregate supply shock, its preferred policy response is unclear. An aggregate supply shock, such as the U.S. economy experienced during the Covid pandemic and again with the tariff increases that the Trump administration began implementing in April, will shift the short-run aggregate supply curve (SRAS) will shift to the left, causing an increase in the price level, along with a decline in real GDP and employment. This combination of rising unemployment and inflation is called stagflation. In this situation, the FOMC faces a policy dilemma: Raising the target for the federal funds rate will help reduce inflation, but will likely increase unemployment, while lowering the target for the federal funds rate will lead to lower unemployment, but will likely increase inflation. The following figure shows the situation during the Covid pandemic when the economy experienced both an aggregate demand and aggregate supply shock. The aggregate demand curve and the aggregate supply curve both shifted to the left, resulting in falling real GDP (and employment) and a rising price level.

Step 4: Answer part c. by explaining what it means to refer to the effect of tariffs on inflation being a “one-time bump.” Tariffs cause the aggregate supply curve to shift to the left because by increasing the prices of raw materials and other inputs, they increase the production costs of some businesses. Assuming that tariffs are not continually increasing, their effect on the price level will end once the production costs of firms stop rising.

Step 5: Answer part d. by explaining what the author means by the FOMC engaing in “risk management,” explaining what a “downshift” in the labor is, and whether if the FOMC is more concerned about a downshift in the labor market than in inflation, it will raise or lower its target for the federal funds rate. The article refers to the “possibility” of a further downshift in the labor market. A downshift in the labor market means that the demand for labor may decline, raising the unemployment rate. Managing the risk of this possibility would involve concentrating on the maximum employment part of the Fed’s dual mandate by lowering its target for the federal funds rate. Note that the expectation that the effect of tariffs on the price level is a one-time bump makes it easier for the committee to focus on the maximum employment part of its mandate because the increase in inflation due to the tariff increases won’t persist.

Solved Problem: How Can Total Employment and the Unemployment Rate Both Increase at the Same Time?

Supports: Macroeconomics, Chapter 9, Economics, Chapter 19, and Essentials of Economics, Chapter 13.

Image generated by ChatGPT

A recent article on axios.com notes that from April 2023 to July 2024, the U.S. economy generated an average net increase of 177,000 jobs per month. Despite that job growth, the unemployment rate during that period increased by 0.8 percentage point. The article observes that: “At first glance, the combination of a rising unemployment rate and strong jobs growth simply does not compute.” How is it possible during a given period for both total employment and the unemployment rate to increase?

Solving the Problem
Step 1: Review the chapter material. This problem is about calculating the unemployment rate, so you may want to review Chapter 9, Section 9.1, “Measuring the Unemployment Rate, the Labor Force Participation Rate, and the Employment-Population Ratio.” 

Step 2: Answer the question by explaining how it’s possible for both the total number of people employed and the unemployment rate to both increase during the same period.  The unemployment rate is equal to the number of people unemployed divided by the number of people in the labor force (multiplied by 100). The labor force equals the sum of the number of people employed and the number of people unemployed.

Let’s consider the situation in a particular month. Suppose that the unemployment rate in the previous month was 4 percent. If, during the current month, both the number of people employed and the number of people unemployed increase, the unemployment rate will increase if the increase in the number of people unemployed as a percentage of the increase in the labor force is greater than 4 percent. The unemployment rate will decrease if the increase in the number of people unemployed as a percentage of the increase in the labor force is less than 4 percent.  

Consider a simple numerical example. Suppose that in the previous month there were 96 people employed and 4 people unemployed. In that case, the unemployment rate was (4/(96 + 4)) x 100 = 4.0%. 

Suppose that during the month the number of people employed increases by 30 and the number of people unemployed increases by 1. In that case, there are now 126 people employed and 5 people unemployed. The unemployment rate will have fallen from 4.0% to (5/(126 + 5)) x 100 = 3.8%.

Now suppose that the number of people employed increased by 30 and the number of people unemployed increases by 3. The unemployment will have risen from 4.0% to (7/(126 + 7)) x 100 = 5.3%.

We can conclude that if both the total number of people employed and the total number of people unemployed increase during a during a period of time, it’s possible for the unemployment rate to also increase.

Solved Problem: Why Do U.S. Airlines Charge Solo Travelers Higher Ticket Prices?

Supports: Microeconomics and Economics, Chapter 15, Section 15.5, and Essentials of Economics, Chapter 10, Section 10.5

Image generated by ChatGTP 03

According to a recent article in the Economist, some U.S. airlines have “started charging higher per-person fares for single-passenger bookings than for identical itineraries with two people.” However, the difference in fares held only for round-trip tickets that included a weekday return flight. For round-trip tickets with a return flight on Saturday, the per-ticket price was the same whether booking for two people or for one person. Briefly explain why an airline might expect to increase its profit using this pricing strategy.

Step 1: Review the chapter material. This problem is about firms using price discrimination, so you may want to review Chapter 15, Sections 15.5 

Step 2: Answer the question by explaining why an airline might expect to increase its profit by charging people traveling alone a higher ticket price than the price it charges per ticket to two people traveling together. The airline is attempting to increase its profit by using price discrimination. Price discrimination involves charging different prices to different customers for the same good or service when the price difference isn’t due to differences in cost. Firms who able to price discriminate increase their profits by doing so.

In Chapter 15, Section 15.5, we call the airlines the “kings of price discrimination” because they often charge many different prices for tickets on the same flight. One key way that airlines practice price discrimination is by charging higher prices to business travelers—who are likely to have a lower price elasticity of demand—than to leisure travelers—who are likely to have a higher price elasticity of demand. To employ this strategy, airlines have to successfully identify which flyers are business travelers. Someone flying alone is more likely than someone flying in a group of two or more people to be a business traveler. In addition, business travelers often attempt to complete their trips before the weekend. Therefore, people returning from a trip on a Saturday or Sunday are more likely to be leisure travelers.

We can conclude that an airline can expect to increase its profit using the pricing strategy discussed in the Economist article because the strategy helps the airline to better identify business travelers.

Solved Problem: Rent Control in Holland

Supports: Microeconomics, Macroeconomics, Economics, and Essentials of Economics, Chapter 4, Section 4.3

Image generated by ChatGTP-40 of a street in a Dutch city.

An article on bloomberg.com has the headline “How Rent Controls Are Deepening the Dutch Housing Crisis.” The article’s subheadline states that: “A law designed to make homes more affordable ended up aggravating an apartment shortage.” According to the article, the Dutch government passed a law that increased the number of apartments subject to rent control from 80% of all apartments to 96%.

  1. Why might the Dutch government have seen expanding rent control as a way to make apartments more affordable? 
  2. Why might the law have aggravated the shortage of apartments in Holland?

Solving the Problem
Step 1: Review the chapter material. This problem is about the effects of rent control, so you may want to review Chapter 4, Section 4.3, “Government Intervention in the Market: Price Floors and Price Ceilings.”

Step 2: Answer part a. by explaining why the Dutch government may have seen expanding rent control as a way to make apartments more affordable. Figure 4.10 from the textbook shows the effects of rent control. In the example illustrated in the figure, after the government imposes rent control, the 1,900,000 people who are still able to rent an apartment pay $1,500 per month rather than $2,500 per month. For these people, rent control has made apartments more affordable.

Step 3: Answer part b. by explaining why rent control laws can make an apartment shortage worse. As Figure 4.10 shows, rent control laws impose a price ceiling below the equilibrium market rent. The result is that the quantity of apartments supplied is less than the quantity of apartments demanded, causing a shortage of apartments. In the case of the Dutch law discussed in the article, existing rent controls were expanded to cover more apartments, forcing the rents charged by landlords for these apartments to fall below what had been the equilibrium market rent, thereby adding to the shortage of apartments in Holland.

Extra credit: The article notes that as a result of the law, some owners of apartments that had previously not been subject to rent control had decided to sell their apartments, taking them off the rental market. That result is common when governments impose rent control or expand the scope of an existing rent control law. One important aspect of rent control is that a shortage of apartments gives landlords a greater opportunity to pick and choose the tenants they prefer. The article notes that a provision of the new law requires that rental contracts be open-ended, rather than for only one or two years, as is more common. As a result, landlords have more difficulty evicting tenants who might be noisy or causing other problems. The law thereby gives landlords an incentive to rent to foreign tenants who would be more likely to give up their apartments voluntarily after a year or two. The result is even fewer apartments available for Dutch residents to rent.

A recent article on bloomberg.com notes that the negative consequences of the law expanding rent control has led the Dutch government to propose modifying the law to allow landlords to charge higher rents on at least some apartments. If passed by the Dutch parliment, the changes would go into effect January 1, 2026.

Solved Problem: Do Some Cable Companies Engage in Price Discrimination?

Supports: Microeconomics and Economics, Chapter 15, Section 15.5, and Essentials of Economics, Chapter 10, Section 10.5

Image generated by ChatGTP-4o

A national provider of cable television and internet service has been frequently criticized by customers on social media for using the following business strategy: The company raises its prices every six to nine months. Any subscriber who calls to complain is offered a discount off of the price increase. Analyze how this strategy can be profit mazimizing for the company.

Step 1: Review the chapter material. This problem is about firms using price discrimination, so you may want to review Chapter 15, Sections 15.5 

Step 2: Answer the question by explaining how the cable company is using price discrimination to increase its profit. Price discrimination involves charging different prices to different customers for the same good or service when the price difference isn’t due to differences in cost. Firms who able to price discriminate increase their profits by doing so.

We’ve seen that there are three requirements for a firm to practice price discrimination: 1) The firm must possess market power, 2) some of the firm’s customers much have a greater willingness to pay for the product than do other customers, and 3) the firm must be able to segment the market to keep customers who buy the product at the low price from reselling it. Cable companies can meet all three requirements. Cable firms possess market power—they  aren’t perfect competitors. Some customers have a higher willingness than other customers to pay for cable service. In fact, many people have become cable cutters and prefer to stream content rather than watch programs on cable. Finally, someone who receives a lower-priced cable subscription can’t resell it.

To increase profit by price discrimination, a firm needs to charger a higher price to customers with a lower price elasticity of demand, and a lower price to customers with a higher price elasticity of demand. People who call up to complain about an increase in the price of a cable subscription are likely to be more price sensitive—and, therefore, more likely to switch to a competing cable company or to cut the cable and switch to streaming—than are people who don’t complain about the increase in the price of a subscription. In other words, the complainers have a higher price elasticity of demand than do the non-complainers and receive a lower price. We can conclude that this business strategy is an example of price discrimination and will increase the profit of the cable company that uses it.

The Risk of Buying Very Long-Term Bonds

Supports: Money, Banking, and the Financial System, Chapter 3, Section 3.5

Image generated by ChatGTP-4o

The 30-year U.S. Treasury bond has the longest maturity available on a bond issued by the U.S. government. Some other governments have issued century bonds, which are bonds that don’t mature for 100 years. Bonds with maturities longer than 30 years are sometimes called ultra-long-term bonds. For example, in June 2020 the government of Austria issued a bond that will mature in June 2120. The bond has a par value of €100 and a coupon rate of 0.85%, which seems low but was high in comparison with the yields on other European government bonds at the time. For example, the yield on the 10-year German government bond was negative from April 2019 through January 2021.

Today (April 25), in a newsletter from the Wall Street Journal, Spencer Jakab noted that: “With a little over 95 years remaining, those [Austrian century] bonds now fetch 35 cents on the euro. Investors aren’t worried about being repaid ….”

a. What does Jakab mean that the “bonds now fetch 35 cents on the euro”?

b. If the investors aren’t worried about the Austrian government making coupon or principal payments on the bond, why do the bonds fetch only 35 cents on the euro?

Solving the Problem
Step 1: Review the chapter material. This problem is about the relationship between the interest-rate risk on a bond and the bond’s maturity, so you may want to review Money, Banking, and the Financial System, Chapter 3, Section 3.5, “Interest Rates and Rates of Return.”

Step 2: Answer part a. by explaining what Jakab means by writing that Austrian century bonds that mature in 2120 now fetch “35 cents on the euro.” The bonds have a par value (or face value) of €100. By “35 cents on the euro,” Jakab must mean that the current price the bonds are trading at is €35.

Step 3: Answer part b. by explaining why the market price of these Austrian century bonds has declined by 65% from their par value even though the bonds have low default risk. As we discuss in this section of the textbook, long-term bonds have substantial interest-rate risk—the risk that the price of the bond will fluctuate in response to changes in market interest rates—even if they have very low default risk—the risk that an investor won’t receive the coupon and principal payments on the bond.  As Table 3.2 in this section shows, the longer the maturity of a bond, the greater the interest-rate risk. As market interest rates on other government bonds have risen, the yield on the Austrian century bonds has also had to rise for investors to be willing to buy these bonds. With a fixed coupon rate of 0.85%, the only way for the yield to rise is for the price of the bonds to fall. Given the very long maturity of these bonds, the price has had to fall by 65% from its par value to make the yield on the bonds competitive with other government bonds.

Solved Problem: Congestion Pricing and the Price Elasticity of Demand

Supports: Microeconomics and Economics, Chapter 6, and Essentials of Economics, Chapter 7, Section 7.5-7.7

ChatGTP-4o image of cars in the Lincoln Tunnel, which connects New Jersey with midtown Manhattan.

In January 2025, New York City began enforcing congestion pricing in the borough of Manhattan south of 60th Street—the congestion relief zone. The Metropolitan Transportation Authority (MTA) in New York collects a toll from a vehicle entering that zone either automatically using the vehicle’s E-ZPass transponder or by reading the vehicle’s license plate and mailing a bill to the vehicle’s owner. Nobel Laureate William Vickrey of Columbia University first proposed congestion pricing in the 1950s as a way to deal with the negative externalities from traffic congestion. Congestion pricing acts as a Pigovian tax that internalizes the external costs drivers generate by using streets in congested areas. (We discuss Pigovian taxes in Microeconomics and Economics, Chapter 5, Section 5.3, and in Essentials of Economics, Chapter 4, Section 4.3.)

The New York City congestion toll is somewhat complex, varying according to the type of vehicle and how the vehicle enters the area in which the toll applies. The congestion toll fora car entering Manhattan through the Lincoln Tunnel on a weekday between 5 am and 9 pm is $6.00 on top of the existing toll of $16.06. In January 2025, the volume of cars driving through the Lincoln Tunnel declined by 8 percent during the weekday hours of 5 am to 9 pm. According to an article in Crain’s New York Business, the number of vehicles entering the congestion relief zone compared with the same month in the previous year declined by 8 percent in January, 12 percent in February, and 13 percent in March.

  1. From the information given, can we determine the price elasticity of demand for entering Manhattan by driving though the Lincoln Tunnel during weekdays from 5am to 9am? Briefly explain.
  2. Suppose someone makes the following claim: “Because the quantity of cars using the Lincoln Tunnel has declined by 8 percent, we know that the MTA must have collected less revenue from cars using the tunnel than before the congestion toll was imposed.” Briefly explain whether you agree.
  3. Is the pattern of increasing percentage declines in vehicle traffic in the congestion relief zone each month from January to March what we would expect? Be sure your answer refers to concepts related to the price elasticity of demand.

Step 1: Review the chapter material. This problem is about the price elasticity of demand, so you may want to review Chapter 6, Sections 6.1-6.4. 

Step 2: Answer part (a) by explaining whether from the information given we can determine the price elasticity of demand for entering Manhattan by driving through the Lincoln Tunnel. We do have sufficient information to determine the price elasticity, provided that nothing else that would affect the demand for driving through the Lincoln Tunnel changed during January. We’re told the percentage change in the quantity demand, so we need only to calculate the percentage change in the price to determine the price elasticity. The change in the price is the $6 congestion toll. The average of the price before and the price after the toll is imposed is ($16.06 + $22.06) = $19.06. Therefore, the percentage change in the price is ($6/$19.06) × 100 = 31.5 percent. The price elasticity of demand is equal to the percentage change in quantity dmanded divided by the percentage change in price: –6%/31.5% = –0.3. Because this value is less than 1 in absolute value, we can conclude that the demand for driving through the Lincoln Tunnel is price inelastic.

Step 3: Answer part (b) by explaining whether because the quantity of cars driving through the Lincoln Tunnel has declined the MTA must have collected less revenue from cars using the tunnel. As shown in Section 6.3 of the textbook, total revenue received will fall after a price increase only if demand is price elastic. In this case, demand is price inelastic, so the total revenue the MTA collects from cars using the Lincoln Tunnel will rise, not fall.

Step 3: Answer part (c) by explaining whether the pattern of increasing percentage declines in vehicle traffic in the congestion relief zone is one we would expect. In Section 6.2, we see that the passage of time is one of the determinants of the price elasticity of demand. The more time that passes, the more price elastic the demand for a product becomes. In other words, the longer the time that people have to adjust to the congestion toll—by, for instance, taking a bus rather than driving through the Lincoln Tunnel in a car—the more likely it is that people will decide not to drive into the congestion relief zone. So, it is not surprising that the number of vehicles entering the congestion relief zone declined by a greater percentage each month from January to March.

Solved Problem: Mickey v. Cost Curves

Supports: Microeconomics and Economics, Chapter 11, Section 11.5, and Essentials of Economics, Chapter 8, Section 8.5

Image generated by ChatGTP-4o showing the costs of inputs to a factory.

Mickey, the Econ Pup, sometimes struggles with drawing and interpreting cost curves. Examine the cost curves shown in images a. and b. and let Mickey know if you find any errors.

a.

b.

Solving the Problem
Step 1: Review the chapter material. This problem is about drawing and interpreting cost curves, so you may want to review Chapter 11, Section 11.5, “Graphing Cost Curves.”

Step 2: Answer part a. by explaining whether there are any errors in the cost curves shown in the image in a. No wonder Mickey is confused! This figure has multiple errors:

  1. It’s an error to have the ATC and AVC curves cross. The unlabeled curve at the bottom is supposed to be AFC. We know that if a firm has fixed costs, then the ATC and AVC curves will get closer and closer as the quantity increases and AFC becomes smaller and smaller. But because AFC will never decline to zero, ATC and AVC can’t be equal at any quantity.
  2. The second error is related to the first error. We know that the MC and ATC curves should intersect at the quantity at which ATC is at a minimum. In this figure, the MC curve intersects the ATC curve at a quantity that is larger than the quantity at which ATC recaches a minimum.
  3. The third error is related to the first two errors. The relationship between the three average cost curves should be ATC = AVC + AFC at every quantity. In this figure the relationship doesn’t hold at any quantity.
  4. Finally, there is a dotted line from the point where the (unlabeled) AFC curve intersects with the MC curve down to the Q-axis. But that point has no economic significance.

Step 3: Answer part b. by explaining whether there are any errors in the cost curves shown in image b. Mickey can rest easy with these cost curve because, although the figure seems to be only partially finished, all of the cost curves are correctly drawn. The MC curve correctly intersects the AVC curve at the quantity at which the AVC curve is at a minimum. The instructor could finish the figure by labeling the bottom curve as AFC and by drawing an ATC curve above the AVC curve, with the ATC curve intersecting the MC curve at the quantity at which the ATC curve is at a minimum.

Trump Administration Implements Historically Large Tariff Increases … and a Related Solved Problem

Image generated by ChatGTP-4o of new cars on a dealer’s lot.

This afternoon (April 2), President Donald Trump announced a sweeping increase in tariff rates on imported goods. The increases were by far the largest since the Smoot-Hawley Tariff of 1930. The United States will impose 10 percent across-the-board tariff on all imports, with higher tariffs being imposed on individual countries. Taking into account earlier tariffs, Chinese imports will be subject to a 54 percent tariff. Imports from Vietnam will be subject to a 46 percent tariff, and imports from the countries in the European Union will be subject to a 20 percent tariff.

President Trump’s objectives in imposing the tariffs aren’t entirely clear because he and his advisers have emphasized different goals at different times. The most common objectives the president and his advisers have offered for the tariff increases are these three:

  1. To increase the size of the U.S. manufacturing sector by raising the prices of imported manufactured goods.
  2. To retaliate against barriers that other countries have raised against U.S. exports.
  3. To raise revenue for the federal government.

The effects of the tariffs on the U.S. economy depend in part on whether foreign countries retaliate by raising their tariffs on imports from the United States and on whether, in the future, the president reduces tariffs in exchange for other countries reducing barriers to U.S. imports. For a background discussion of tariffs, see this post. Glenn and Tony discuss tariffs in this podcast, which was recorded on Friday afternoon (March 28). A discussion of the Smoot-Hawley Tariff can be found here.

The following Solved Problem looks at one aspect of the effects of a tariff increase.

Supports: Microeconomics and Economics, Chapter 6, Section 6.3.

Nearly every automobile assembled in the United States contains at least some imported parts. An article on axis.com made the following statement about the effect on U.S. automobile manufacturers of an increase in the tariff on imported auto parts: “If car prices [in the United States] go up, Americans will buy fewer of them, meaning less revenue ….” What assumption is the author of this article making about the demand for new automobiles in the United States?

Solving the Problem

Step 1: Review the chapter material. This problem is about the effect of price increases on a firm’s revenue, so you may want to review the section “The Relationship between Price Elasticity of Demand and Total Revenue.”

Step 2: Answer the question by explaining what must be true of the demand for new automobiles in the United States if an increase in automobile prices results in a decline in the revenue received by automobile producers. This section of Chapter 6 explains how the price elasticity of demand affects the revenue a firm receives following a price increase. A price increase, holding everything else constant that affects the demand for a good, always causes a decline in the quantity demanded. If demand is price inelastic, an increase in price will result in an increase in revenue because the percentage decline in quantity demanded will be smaller than the percentage increase in the price. If demand is price elastic, an increase in price will result in a decrease in revenue because the percentage decline in the quantity demanded will be larger than the percentage increase in price. We can conclude that the author of the article must be assuming that the demand for new automobiles in the United States is price elastic.