Consider a market for used cars. Suppose there are only two kind of cars: lemons and good cars. A lemon is worth $1,500 both to its current owner and to anyone who buys it. A good car is worth $6,000 to its current and potential owners. Buyers can't tell whether a car is a lemon until after they have bought the car.
What do economists call the problem that buyers of used cars face? What is the price of a used car? Explain and substantiate your answer.