5. Donald produces nails at a cost of $200 per ton. If he sells the nails for $500 per ton, his surplus is

A) $200 per ton. B) $300 per ton C) $500 per ton. D) $700 per ton.

6. If Roberta sells shirt for $30, and her surplus from the sale is $21, her cost must have been

A) $51 B) $30 C) $21 D) $9

7. Belva is willing to pay $65.00 for a pair of shoes for a formal dance. She finds a pair at her favorite outlet shoe store for $48.00. Belva's consumer surplus is

A) $17. B) $31 C) $48 D) $65

8. Jeff decides that he would pay as much as $3,000 for a new laptop computer. He buys the computer and realizes consumer surplus of $700. How much did Jeff pay for his computer?

A) $700 B) $2,300 C) $3,000 D) $3,700

9. This table refers to five possible buyers' willingness to pay for a case of Vanilla Coke. Refer to the Table below. If the market price is $5.50, the consumer surplus in the market will be A) $3.00. B) $4.50 C) $15.50 D) $21.00