Q: Which formula correctly calculates the total consumer surplus in a market where the demand curve is linear and the equilibrium price is below the maximum willingness to pay?

$\frac{1}{2} \times \text{Base} \times \text{Height}$

Q: If the equilibrium price in a housing market is $400,000, the maximum marginal benefit is $800,000, and the equilibrium quantity is 700,000 houses, what is the consumer surplus?

$\frac{1}{2} \times 700,000 \times (800,000 - 400,000) = 140,000,000,000$

Q: In a perfectly competitive market, what condition must be met for market efficiency?

$\text{Marginal benefit} = \text{Marginal cost}$

Question 1

Suppose your willingness to pay for a pair of Air Jordans is $220, and the market price is $180. What is your consumer surplus?

Accepted Answer

$40

Question 2

Which formula correctly calculates the total consumer surplus in a market where the demand curve is linear and the equilibrium price is below the maximum willingness to pay?

Accepted Answer

$\frac{1}{2} 	imes 	ext{Base} 	imes 	ext{Height}$

Question 3

A seller is willing to accept $10 for a used textbook, but the market price is $25. What is the producer surplus for this seller?

Accepted Answer

$15

Question 4

Which of the following best describes economic efficiency?

Accepted Answer

The outcome that yields the largest possible economic surplus.

Question 5

If the equilibrium price in a housing market is $400,000, the maximum marginal benefit is $800,000, and the equilibrium quantity is 700,000 houses, what is the consumer surplus?

Accepted Answer

$\frac{1}{2} 	imes 700,000 	imes (800,000 - 400,000) = 140,000,000,000$

Question 6

Which of the following is NOT a critique of economic efficiency as a policy goal?

Accepted Answer

Efficiency always ensures fair outcomes.

Question 7

What does the area between the demand and supply curves, up to the equilibrium quantity, represent?

Accepted Answer

Total economic surplus

Question 8

In a perfectly competitive market, what condition must be met for market efficiency?

Accepted Answer

$	ext{Marginal benefit} = 	ext{Marginal cost}$

Question 9

Which of the following is an example of market failure?

Accepted Answer

A monopoly charging higher prices and producing less than the efficient quantity.

Question 10

If a market produces less than the efficient quantity, what is the result?

Accepted Answer

Deadweight loss due to underproduction

Question 11

Which of the following statements about the 'invisible hand' is most accurate?

Accepted Answer

Individual self-interest can lead to efficient market outcomes.

Question 12

A market for cigarettes has a maximum marginal benefit of $9 per packet, a price of $5, and a lowest marginal cost of $3. If 4 billion packets are sold, what is the economic surplus?

Accepted Answer

$12 	ext{ billion}$

Question 13

Which of the following best describes the difference between positive and normative economics?

Accepted Answer

Positive economics describes what is; normative economics prescribes what ought to be.

Question 14

If a policy increases the total economic surplus but makes some people worse off, what does this illustrate?

Accepted Answer

Efficiency does not guarantee equity.

Question 15

Which of the following is a real-world example of a market failure due to externalities?

Accepted Answer

Air pollution from factories affecting nearby residents.

Question 16

Suppose the government imposes a quota that reduces the quantity traded below the market equilibrium. What is the likely effect?

Accepted Answer

Deadweight loss increases due to underproduction.

Question 17

Which of the following is true about producer surplus?

Accepted Answer

It is the difference between the price received and the marginal cost.

Question 18

Why might willingness to pay not always reflect true preferences?

Accepted Answer

Because it also reflects ability to pay.

Question 19

Which of the following is a normative statement?

Accepted Answer

"The government should implement rent control to help tenants."

Question 20

If the area of deadweight loss increases in a market, what does this indicate?

Accepted Answer

The market is becoming less efficient.

Lecture 2: Economic Surplus and Market Efficiency: Microeconomics Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards