• 55 questions

AP Econ Supply and Demand Practice Test

Unofficial multiple-choice practice for Unit 2 of AP Microeconomics: demand, supply, elasticity, equilibrium, surplus, price controls, taxes and trade.

The price of a movie ticket rises and nothing else changes. By the law of demand, what happens?

Pick an answer, then press Check answer. Then you see Correct or Not quite, with the reason. Keys: A to D pick, Enter checks.

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Unofficial practice questions, not affiliated with the College Board. Bank checked October 11, 2026.

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All 55 questions

Topic 2.1: Demand 6

  • At a price of $3, Ana buys 4 tacos, Ben buys 2 and Cal buys none. If these three are the whole market, what is the market quantity demanded at $3? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.A.6; course topic 2.1
  • Household incomes rise, and the demand for instant noodles falls. What kind of good are instant noodles? Wikipedia, "Inferior good"; course topic 2.1
  • The price of a movie ticket rises and nothing else changes. By the law of demand, what happens? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.A.4; course topic 2.1
  • The price of printers falls sharply. What happens to the demand for printer ink, a complement of printers? Wikipedia, "Complementary good"; course topic 2.1
  • Which event shifts the demand curve for bicycles to the right? Wikipedia, "Demand curve"; course topic 2.1
  • Which pair of effects does the course description name to explain why demand curves slope downward? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.A.5; course topic 2.1
Show all 55 questions (49 more)

Topic 2.2: Supply 6

  • A new harvesting machine lets farms pick strawberries at a lower cost. What happens to the supply of strawberries? Wikipedia, "Supply (economics)"; course topic 2.2
  • At a price of $5, Firm A offers 10 units, Firm B offers 15 and Firm C offers 5. If they are the only sellers, what is the market quantity supplied at $5? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.C.2; course topic 2.2
  • By the law of supply, what does a rise in a good's own price cause? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.C.1; course topic 2.2
  • Many new firms enter the food truck business in a city. What happens to the market supply of food truck meals? Wikipedia, "Supply (economics)"; course topic 2.2
  • The price of flour, an input for bakeries, rises. What happens in the market for bread? Wikipedia, "Supply (economics)"; course topic 2.2
  • Which change causes a movement along the supply curve for wheat and not a shift of the curve? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.D.1; course topic 2.2

Topic 2.3: Price elasticity of demand 6

  • A bus fare rises from $2.00 to $2.50, and daily rides fall from 1,000 to 900. Measuring each percentage change from its starting value, what is the price elasticity of demand in magnitude? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.2; course topic 2.3
  • A demand curve is a straight, downward-sloping line. How does the price elasticity of demand behave along it? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.2; course topic 2.3
  • A firm raises its price by 5%, and its total revenue does not change. Over that range, demand is: AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.3 and MKT-3.E.5; course topic 2.3
  • A price rises by 10% and quantity demanded falls by 20%. What is the price elasticity of demand, in magnitude, and how is demand described? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.2 and MKT-3.E.3; course topic 2.3
  • Demand for a product is elastic over a range of prices. The seller cuts the price within that range. What happens to total revenue? Wikipedia, "Price elasticity of demand"; course topic 2.3
  • Which product is likely to have the most price-elastic demand? Wikipedia, "Price elasticity of demand"; course topic 2.3

Topic 2.4: Price elasticity of supply 4

  • A stadium has a fixed number of seats for tonight's game. Whatever the ticket price, the number of seats cannot change. The supply of seats tonight is: Wikipedia, "Price elasticity of supply"; course topic 2.4
  • The price of a good rises by 20%, and the quantity supplied rises by 10%. What is the price elasticity of supply, and how is supply described? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.6 and MKT-3.E.7; course topic 2.4
  • The price of a handmade rug rises from $200 to $250, and the weavers raise output from 40 to 60 rugs a month. Measuring each percentage change from its starting value, what is the price elasticity of supply? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.6; course topic 2.4
  • When is supply described as unit elastic? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.7; course topic 2.4

Topic 2.5: Other elasticities 5

  • A good has an income elasticity of demand of −0.4. What does the sign tell an economist? Wikipedia, "Income elasticity of demand"; course topic 2.5
  • Consumer income rises by 10%, and the quantity of restaurant meals demanded rises by 15%. What is the income elasticity of demand, and what kind of good are restaurant meals? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.10; course topic 2.5
  • The cross-price elasticity of demand between hot dogs and hot dog buns is −0.8. The two goods are: Wikipedia, "Cross elasticity of demand"; course topic 2.5
  • The price of butter rises by 10%, and the quantity of margarine demanded rises by 5%. Which pair gives the cross-price elasticity and the relationship between the two goods? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.11; course topic 2.5
  • Which elasticity do economists use to decide whether two goods are substitutes, complements or not related? AP Microeconomics Course and Exam Description, essential knowledge MKT-3.E.11; course topic 2.5

Topic 2.6: Market equilibrium and surplus 8

  • A barber would accept as little as $12 for a haircut and is paid $20. What is the barber's producer surplus on that haircut? Wikipedia, "Economic surplus"; course topic 2.6
  • A shopper would pay up to $50 for a jacket and buys it for $35. What is her consumer surplus on the jacket? Wikipedia, "Economic surplus"; course topic 2.6
  • A straight-line demand curve meets the price axis at $50. The market's equilibrium is a price of $20 and a quantity of 60 units. What is consumer surplus? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.A.4; course topic 2.6
  • A straight-line supply curve meets the price axis at $5. The market's equilibrium is a price of $25 and a quantity of 40 units. What is producer surplus? Wikipedia, "Economic surplus"; course topic 2.6
  • At the equilibrium price in a competitive market, which statement is true? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.A.2; course topic 2.6
  • Demand in a market is Qd = 100 − 2P and supply is Qs = 20 + 2P, with P in dollars. What are the equilibrium price and quantity? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.A.2; course topic 2.6
  • In a perfectly competitive market with no market failure, which quantity gives the largest total economic surplus? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.A.5; course topic 2.6
  • On a supply and demand graph, where is consumer surplus? Wikipedia, "Economic surplus"; course topic 2.6

Topic 2.7: Disequilibrium and changes in equilibrium 8

  • Demand and supply both increase at the same time. What can be said for certain about the new equilibrium? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.B.2; course topic 2.7
  • Demand for a good increases while its supply curve stays where it is. What happens to the equilibrium price and quantity? Wikipedia, "Supply and demand"; course topic 2.7
  • Demand for a good increases. The rise in equilibrium price will be largest when supply is: AP Microeconomics Course and Exam Description, essential knowledge MKT-4.B.2; course topic 2.7
  • Demand is Qd = 100 − 2P and supply is Qs = 20 + 2P, so the equilibrium price is $20. Demand then rises by 20 units at every price. What is the new equilibrium price? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.B.2; course topic 2.7
  • Demand is Qd = 100 − 2P and supply is Qs = 20 + 2P. If the price is held at $15, what is the result? Wikipedia, "Shortage"; course topic 2.7
  • The price in a competitive market is above the equilibrium price. What results? Wikipedia, "Excess supply"; course topic 2.7
  • The price of leather, an input for shoes, rises. In the market for shoes, what happens to the equilibrium price, the quantity and consumer surplus? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.B.2; course topic 2.7
  • Supply of a good increases while its demand curve stays where it is. What happens to the equilibrium price and quantity? AP Microeconomics Course and Exam Description, essential knowledge MKT-4.B.2; course topic 2.7

Topic 2.8: Government intervention 7

  • A competitive market is producing the efficient quantity. The government then pays producers a subsidy for each unit. What happens? AP Microeconomics Course and Exam Description, essential knowledge POL-1.A.4; course topic 2.8
  • A price ceiling is set above the equilibrium price in a competitive market. What is its effect? AP Microeconomics Course and Exam Description, essential knowledge POL-1.A.1; course topic 2.8
  • A price floor changes the outcome in a market only if it is set: Wikipedia, "Price floor"; course topic 2.8
  • A tax of $2 per unit cuts the quantity sold from 100 units to 80 units. With straight-line supply and demand curves, what is the deadweight loss? AP Microeconomics Course and Exam Description, essential knowledge POL-1.A.5; course topic 2.8
  • A tax of $2 per unit is placed on a good. The quantity sold falls from 100 units to 80 units. How much tax revenue does the government collect? AP Microeconomics Course and Exam Description, essential knowledge POL-1.A.3; course topic 2.8
  • Demand for a good is very inelastic and supply is very elastic. A per-unit tax is placed on the good. Who bears most of the tax? AP Microeconomics Course and Exam Description, essential knowledge POL-1.A.6; course topic 2.8; Wikipedia, "Tax incidence"
  • Demand is Qd = 100 − 2P and supply is Qs = 20 + 2P, so the equilibrium price is $20. The government sets a price ceiling of $10. What results? AP Microeconomics Course and Exam Description, essential knowledge POL-1.A.1; course topic 2.8

Topic 2.9: International trade and public policy 5

  • A country that did not trade opens its market for sugar. The world price is below the price the country had on its own. What happens at home? AP Microeconomics Course and Exam Description, essential knowledge POL-1.B.1; course topic 2.9
  • A government collects a duty on every ton of steel that enters the country. What is this policy called? Wikipedia, "Tariff"; course topic 2.9
  • Domestic demand is Qd = 100 − 2P and domestic supply is Qs = 20 + 2P. The world price is $10, and the government adds a tariff of $5 per unit. How much tariff revenue does it collect? AP Microeconomics Course and Exam Description, essential knowledge POL-1.B.2; course topic 2.9
  • Domestic demand is Qd = 100 − 2P and domestic supply is Qs = 20 + 2P. With free trade at a world price of $10, how many units does the country import? AP Microeconomics Course and Exam Description, essential knowledge POL-1.B.1; course topic 2.9
  • How does an import quota differ from a tariff? Wikipedia, "Import quota"; course topic 2.9

How this list was compiled: Our own questions, written to Unit 2 (Supply and Demand) of the College Board's AP Microeconomics Course and Exam Description, effective fall 2026, https://apcentral.collegeboard.org/media/pdf/ap-microeconomics-course-and-exam-description.pdf, read 2026-10-11. The principle behind each answer was read on 2026-10-11 in the essential knowledge statement of the course description or the Wikipedia article named under the question. Every calculated answer is worked from the numbers the question prints and was worked out a second time. Licence: Own work. Short quotations from the public documents named under each question.

How it works

This AP econ supply and demand practice test has 55 questions of our own on Unit 2 of AP Microeconomics, Supply and Demand. It is unofficial and has no tie to the College Board, the owner of AP.

Read the full guide

What Unit 2 covers

The College Board's course description, effective fall 2026 and read October 11, 2026, gives Unit 2 nine topics and no weights among them, so the spread is ours: demand (6 questions), supply (6), price elasticity of demand (6), price elasticity of supply (4), other elasticities (5), market equilibrium and surplus (8), disequilibrium and changes in equilibrium (8), government intervention (7) and international trade (5).

Worked answers and sources

Each calculation is worked from the numbers the question prints. Under the answer stands the essential knowledge statement or the Wikipedia article where the principle can be read. The description keeps the graphing of quotas out of the exam, so quotas are asked in words.

  • Ask first whether the good's own price changed. If it did, move along the curve. Anything else shifts the curve.
  • Elasticity divides percentage changes, never unit changes. Along a straight demand line the slope is constant and the elasticity is not.
  • When both curves shift, one of price and quantity is certain. The other depends on the sizes of the shifts.

Questions and answers

What unit is supply and demand in AP Microeconomics?

Unit 2, Supply and Demand, the second of six units. It carries 20 to 25% of the multiple-choice section, by the College Board's course page, and the description allows about 13 to 15 class periods.

Is this an AP econ supply and demand equilibrium practice test?

Yes. Sixteen of the 55 questions are on topics 2.6 and 2.7: finding the equilibrium price and quantity from two equations, shortages and surpluses, and what happens when one curve or both curves shift.

Does this AP economics practice test on supply and demand fit AP Macroeconomics?

In part. AP Macroeconomics teaches demand, supply and market equilibrium in its Unit 1, topics 1.4 to 1.6. The elasticity, surplus, tax and tariff questions here belong to AP Microeconomics only.

How many multiple-choice questions are on the AP Microeconomics exam?

Sixty, in 1 hour 10 minutes, for 66% of the exam score, by the College Board's exam page. One long and two short free-response questions make up the rest.

Are these real AP Microeconomics exam questions?

No. The exam's questions are the College Board's, and none stands here in its own words or in ours. All 55 were written for this page from the nine topics of Unit 2.

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