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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
admin
2009-05-19
104
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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