AMC 8 2012 Problem 8

AMC8 2012 年第 8

百分比★★☆☆☆
A shop advertises everything is "half price in today's sale." In addition, a coupon gives a 20% discount on sale prices. Using the coupon, the price today represents what percentage off the original price?
一家商店做了如下广告:"今天所有商品半价。"另外,还有可以使价格降低 20%的一张优惠券可以使用。若使用优惠券,那么今天的商品价格相当于原价降低了百分之多少?
  1. A.10\hspace{.05in}10
  2. B.33\hspace{.05in}33
  3. C.40\hspace{.05in}40
  4. D.60\hspace{.05in}60
  5. E.70\hspace{.05in}70

正确答案 · Correct Answer

D

解析 · Solution

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