To find the market demand curve for in-line skates,we must
A) add the quantities demanded at every price and every income by every buyer of in-line skates.
B) add the quantities demanded at prices that all buyers can afford to pay.
C) sum horizontally the individual demand curves of all the buyers.
D) take account of the skate buying plans of all actual and potential buyers in all possible situations.
E) None of the above answers is correct because we need also to take account of the supply of in-line skates.

Question

Quizplus · Accepted Answer

The market demand curve for in-line skates can be derived by horizontally summing the individual demand curves of all buyers. This is because at each price level, the total quantity demanded is the sum of the quantities demanded by individual buyers.

To Find the Market Demand Curve for In-Line Skates,we Must