試題詳解

10. Which of the following statements demonstrates the “law of demand”?
(A) John buys more donuts at $0.25 per donut than at $0.50 per donut, other things equal.
(B) Allen buys fewer muffins at $0.75 per muffin than at $1 per muffin, other things equal.
(C) After Tim got a raise at work, he bought more pretzels at $1.50 per pretzel than he did before his raise.
(D) Mike buys fewer Snickers at $0.60 per Snickers after the price of Milky Ways falls to $0.50 per Milky Way