試題詳解

5. Four people each have a different willingness to pay for one unit of a good: George will pay $15, Glen will pay $12, Tom will pay $10, and Peter will pay $8. If the price is equal to $9 per unit then the quantity demanded in the market will be ______ and the consumer surplus for this unit will be ______.
(A) 3； $10
(B) 3； $37
(C) 3； $36
(D) 4； $8