2. 外语
  3. A consumer insulates a house with material bought at 20 percent off the list price of $370. If the consumer also receives a reba

A consumer insulates a house with material bought at 20 percent off the list price of $370. If the consumer also receives a reba

admin2009-05-19  41
问题 A consumer insulates a house with material bought at 20 percent off the list price of $370. If the consumer also receives a rebate of $25 from the manufacturer of the material, how much does the material cost the consumer?
选项 A、$238
B、$240
C、$263
D、$271
E、$325
答案D
解析 一名装修房子的消费者以20％的折扣买了标价为370美元的材料，若该消费者同时还从材料制造商那里获得$25回扣，问这个消费者买材料花了多少钱?
解：本题的正确答案是(D)。“20％ off the listing price”指打了20％的折，等同于at a discount of 20％，由题意可得该消费者买材料花的钱为：370×(1-20％)-25=271
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