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What was the original price of an item if a discount of 20 percent reduced the p
What was the original price of an item if a discount of 20 percent reduced the p
游客
2024-01-12
50
管理
问题
What was the original price of an item if a discount of 20 percent reduced the price to $100?
选项
A、$80
B、$120
C、$125
D、$150
E、$250
答案
C
解析
若一商品打折(discount)20%后价钱降到$100,那么它原来的价钱是多少?
解:本题的正确答案为(C)。“a discount of 20 percent”表示打折20%,设该商品原价为x,则有:x(1-20%)=$100 so, x=$125
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