Macroeconomics Quiz: Demand
12 questions · exam conditions
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DemandQuestion 1 of 12

A municipal transit authority aims to increase total revenue from its bus system. An economic study has determined that the price elasticity of demand for bus rides is -1.4. Given the current fare, which pricing strategy should the authority pursue to achieve its goal?

Increase the fare, as higher prices always lead to higher revenue.
Keep the fare constant, because the market is in equilibrium.
Decrease the fare, because demand is price elastic.
Decrease the fare, because demand is price inelastic.
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Macroeconomics Quiz

Macroeconomics Quiz: Demand

Practice Demand in Macroeconomics with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Demand, giving you a quick way to practice the rules, question types, and explanations that matter most for Macroeconomics.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

A municipal transit authority aims to increase total revenue from its bus system. An economic study has determined that the price elasticity of demand for bus rides is -1.4. Given the current fare, which pricing strategy should the authority pursue to achieve its goal?

  1. Increase the fare, as higher prices always lead to higher revenue.
  2. Keep the fare constant, because the market is in equilibrium.
  3. Decrease the fare, because demand is price elastic. (correct answer)
  4. Decrease the fare, because demand is price inelastic.
Explanation: When demand is price elastic (the absolute value of elasticity is greater than 1), a decrease in price will lead to a proportionally larger increase in quantity demanded. This combination results in an increase in total revenue (Price × Quantity). Conversely, increasing the price when demand is elastic would cause a large drop in ridership and a decrease in total revenue.

Question 2

A smartphone manufacturer announces a permanent price reduction for its latest model from $800 to $700. The company states the price cut is possible due to new efficiencies in its supply chain. In the following quarter, the volume of sales for this model increases by 15%. How would this event be described in economic terms?

  1. A rightward shift of the demand curve.
  2. An increase in demand.
  3. An increase in the quantity demanded. (correct answer)
  4. A rightward shift of the supply curve causing an increase in demand.
Explanation: A change in the price of the good itself causes a movement along the demand curve, not a shift of the curve. A price decrease leads to an increase in the quantity demanded. A change in demand refers to a shift of the entire curve, caused by factors other than the good's own price (e.g., income, tastes, price of related goods).

Question 3

A government announces a credible plan to impose a significant excise tax on gasoline, with the tax set to take effect in three months. What is the most likely impact on the gasoline market during the period before the tax is implemented, assuming suppliers cannot perfectly adjust their short-term inventory levels?

  1. The demand curve for gasoline will shift to the right. (correct answer)
  2. The supply curve for gasoline will shift to the left.
  3. There will be a movement up along the current demand curve.
  4. The demand for gasoline will remain unchanged until the tax takes effect.
Explanation: Consumers' expectations about future prices affect current demand. The announcement of a future tax will increase the expected future price of gasoline. To avoid the higher price, consumers will increase their purchases now. This is represented by a rightward shift of the current demand curve.

Question 4

A market analysis finds that a 10% decrease in the price of tablet computers is associated with a 4% decrease in the sales of laptop computers, holding other factors constant. From this information, one can conclude that the cross-price elasticity of demand is:

  1. -2.5, and the goods are complements.
  2. +0.4, and the goods are substitutes. (correct answer)
  3. -0.4, and the goods are complements.
  4. +2.5, and the goods are substitutes.
Explanation: Cross-price elasticity is the percentage change in quantity demanded of one good divided by the percentage change in the price of another good. Here, it is (%ΔQd of laptops) / (%ΔP of tablets) = (-4%) / (-10%) = +0.4. A positive cross-price elasticity indicates that the two goods are substitutes: as the price of one falls, the demand for the other also falls.

Question 5

An economic downturn in a country leads to a 5% fall in average real household income. During this period, analysts observe that the sales volume of instant noodles increases by 8%. Concurrently, the price of rice, a common substitute, decreases by 3% due to a surplus harvest.

Based on the information in the passage, which of the following is the most direct conclusion about instant noodles?

  1. They are a normal good.
  2. They are an inferior good. (correct answer)
  3. They are a Giffen good.
  4. They are a perfect substitute for rice.
Explanation: An inferior good is a good for which demand increases when consumer income decreases. The data shows that a 5% fall in income is associated with an 8% rise in sales, indicating instant noodles are an inferior good. This conclusion is strengthened because the sales increase occurred despite the price of a substitute (rice) falling, which would otherwise tend to decrease the demand for instant noodles.

Question 6

A major technological breakthrough significantly reduces the production cost of batteries for electric vehicles (EVs), leading to a sharp drop in the market price of new EVs. Assume gasoline-powered cars and EVs are substitutes and that gasoline is a key input for gasoline-powered cars. What is the most likely immediate effect in the market for gasoline?

  1. The demand curve for gasoline will shift to the left. (correct answer)
  2. There will be a decrease in the quantity of gasoline demanded.
  3. The demand curve for gasoline will shift to the right.
  4. The supply curve for gasoline will shift to the left.
Explanation: A lower price for EVs will increase the quantity of EVs demanded. Since EVs and gasoline-powered cars are substitutes, this will lead to a decrease in the demand for gasoline-powered cars. Consequently, the demand for gasoline, a complement to gasoline-powered cars, will decrease. This is represented by a leftward shift of the demand curve for gasoline.

Question 7

A sudden and widespread loss of confidence in the banking system causes households to withdraw their savings and hold more cash. In the context of the money market, how would this event be characterized?

  1. A decrease in the supply of money.
  2. An increase in the quantity of money supplied.
  3. A decrease in the quantity of money demanded.
  4. An increase in the demand for money. (correct answer)
Explanation: When you encounter questions about behavioral changes in financial markets, focus on distinguishing between shifts in demand/supply curves versus movements along existing curves. The money market shows the relationship between interest rates and the quantity of money people want to hold. A loss of confidence in banks causing people to withdraw savings and hold more cash represents a fundamental change in people's preferences for holding money. This shifts the entire money demand curve to the right - at any given interest rate, people now want to hold more cash than before. This is an increase in money demand. Answer D correctly identifies this behavioral shift. When people lose confidence in banks, they prefer the liquidity and safety of cash over bank deposits, increasing their overall demand for money holdings. Answer A is wrong because the money supply (controlled by the Federal Reserve through monetary policy) hasn't changed - only people's behavior has changed. Answer B confuses supply with demand and describes a movement along the supply curve rather than the demand shift occurring here. Answer C gets the direction completely backwards - people are demanding more money, not less. The key trap here is confusing the physical movement of money (withdrawing from banks) with changes in money demand or supply. Just because money is moving doesn't mean the supply has changed - the total amount of money in the economy remains the same, but people's preferences for holding it have shifted. Remember: when people's preferences change, think demand or supply shifts, not just movements along existing curves.

Question 8

In a given year, a country's average real income per capita rises by 8%. During the same year, consumer spending on used cars falls by 2%, while spending on international travel increases by 12%. Which of the following statements is consistent with this data?

  1. Used cars are an inferior good, and international travel is a luxury good. (correct answer)
  2. Used cars are a normal good, and international travel is an inferior good.
  3. Both goods are normal, but demand for travel is more income-elastic.
  4. Used cars are a Giffen good, and international travel is a Veblen good.
Explanation: Income elasticity of demand is (%ΔQd) / (%ΔIncome). For used cars: (-2%) / (+8%) = -0.25. Since it's negative, used cars are an inferior good. For international travel: (+12%) / (+8%) = +1.5. Since it's positive, it's a normal good. Since the elasticity is greater than 1, it is specifically classified as a luxury good.

Question 9

Suppose a national government significantly increases its spending on national defense, financed entirely by issuing new government bonds. At the same time, a widespread surge in consumer confidence leads to households saving less and spending more at every level of income. What is the combined effect of these events on the aggregate demand (AD) curve?

  1. The AD curve shifts to the right. (correct answer)
  2. The AD curve shifts to the left.
  3. The net effect on the AD curve is uncertain.
  4. There is a movement down along the AD curve.
Explanation: Both events cause a rightward shift in the aggregate demand curve. The increase in government spending (G) directly increases aggregate demand. The surge in consumer confidence leads to an increase in consumption (C) for any given level of income, which also increases aggregate demand. Since both effects push AD in the same direction, the combined effect is a definitive shift to the right.

Question 10

When a video streaming service increases its monthly subscription price from $14.99 to $17.99, the number of active subscribers falls from 2.5 million to 2.2 million. Using the midpoint method, the price elasticity of demand for this service is approximately:

  1. -0.60
  2. -0.70 (correct answer)
  3. -1.42
  4. -1.67
Explanation: The midpoint formula for price elasticity of demand is Ed = [(Q2-Q1)/((Q1+Q2)/2)] / [(P2-P1)/((P1+P2)/2)]. Percentage change in quantity = (2.2 - 2.5) / ((2.2 + 2.5) / 2) = -0.3 / 2.35 ≈ -0.1277. Percentage change in price = (17.99 - 14.99) / ((14.99 + 17.99) / 2) = 3.00 / 16.49 ≈ 0.1819. Elasticity = -0.1277 / 0.1819 ≈ -0.70.

Question 11

Holding real income and nominal interest rates constant, a 10% increase in the economy's aggregate price level will lead to which of the following in the money market?

  1. A 10% decrease in the nominal quantity of money demanded.
  2. A 10% increase in the demand for real money balances.
  3. No change in the nominal quantity of money demanded.
  4. A 10% increase in the nominal quantity of money demanded. (correct answer)
Explanation: The demand for money is a demand for real purchasing power. The demand for real money balances (M/P) depends on real income and interest rates. If these are constant, the demand for real balances is constant. For M/P to remain constant when the price level (P) increases by 10%, the nominal money demand (M) must also increase by 10% to facilitate the same level of real transactions at higher prices.

Question 12

The aggregate demand curve is downward-sloping for reasons different from the individual demand curve. Which of the following correctly identifies a reason for the slope of the aggregate demand curve?

  1. The substitution effect: as the overall price level falls, consumers substitute toward relatively cheaper goods.
  2. The law of diminishing marginal utility: each additional unit of aggregate output provides less satisfaction.
  3. The income effect: a lower price level increases consumers' real income, allowing them to buy more of all goods.
  4. The wealth effect: a lower price level increases the real value of households' nominal assets, increasing consumption. (correct answer)
Explanation: When analyzing the aggregate demand curve, you need to understand that it slopes downward for fundamentally different reasons than individual demand curves. The aggregate demand curve shows the relationship between the overall price level and total spending in the economy, not the relationship between one good's price and quantity demanded. The wealth effect (option D) correctly explains this downward slope. When the overall price level falls, the real purchasing power of people's nominal assets—like cash, bank deposits, and bonds—increases. If you have $1,000 in your checking account and prices fall by 10%, that money can now buy more goods and services than before. This increase in real wealth leads households to increase their consumption spending, causing movement along the aggregate demand curve. Option A incorrectly applies microeconomic substitution effects to macroeconomics. At the aggregate level, there aren't "relatively cheaper goods" to substitute toward when all prices change proportionally. Option B misapplies diminishing marginal utility, which explains individual consumer behavior, not economy-wide spending patterns. The concept doesn't make sense when applied to total economic output. Option C describes a real income effect that might seem plausible, but this mechanism primarily works through the wealth effect described in option D, making D the more precise and complete explanation. Remember that aggregate demand curve questions test your understanding of macroeconomic effects—wealth effects, interest rate effects, and international trade effects—not microeconomic consumer theory. Focus on how overall price level changes affect the entire economy's spending patterns.