Problem Solving: Consumer Surplus Scenarios for AP Micro Exam Prep

📚 Quick Study Guide

• 💰 Consumer surplus represents the difference between what a consumer is willing to pay for a good or service and what they actually pay.
• 📈 It's graphically represented as the area below the demand curve and above the market price.
• 📐 Formula: Consumer Surplus = Willingness to Pay - Actual Price. For multiple units, it's the area of the triangle or sum of individual surpluses.
• 🎯 Changes in price affect consumer surplus: Price decreases increase surplus, and price increases decrease it.
• 💡Understanding demand curves is crucial for calculating consumer surplus. Remember, the demand curve reflects marginal benefit.

Practice Quiz

1. Which of the following best describes consumer surplus?
   1. The total revenue earned by producers.
   2. The difference between the price consumers pay and the cost of production.
   3. The benefit consumers receive from paying less than they were willing to pay.
   4. The market equilibrium price.


2. Suppose a consumer is willing to pay $20 for a movie ticket, but the actual price is $12. What is the consumer surplus?
   1. $8
   2. $12
   3. $20
   4. $32


3. If the market price of a good decreases, what happens to consumer surplus?
   1. It decreases.
   2. It increases.
   3. It remains the same.
   4. It becomes zero.


4. Consumer surplus is graphically represented by the area:
   1. Above the supply curve and below the market price.
   2. Below the demand curve and above the market price.
   3. Above the demand curve and below the market price.
   4. Below the supply curve and above the market price.


5. What does the demand curve represent in the context of consumer surplus?
   1. Marginal cost
   2. Marginal revenue
   3. Marginal benefit
   4. Total cost


6. Suppose John is willing to pay $5 for his first cup of coffee, $4 for the second, and $3 for the third. If the market price is $3 per cup, what is John's total consumer surplus?
   1. $0
   2. $2
   3. $3
   4. $6


7. An increase in the supply of a product typically leads to:
   1. A decrease in consumer surplus.
   2. An increase in consumer surplus.
   3. No change in consumer surplus.
   4. A higher equilibrium price.