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标题: OG 12-195 请指教！ [打印本页]

作者: anchoretes 时间: 2010-8-3 06:56 标题: OG 12-195 请指教！

a store currently charges the same price for each towel that it sells. it the current price of each towel were to be increased by $1, 10 fewer of the towels could be bought for $120, excluding sales tax. what is the current price of each towel?
A $1
B $2
C $3
D $4
E $12
答案是 C

作者: lilingfeng 时间: 2010-8-4 06:31

120/x -10 =120/(x+1) 原题就是这个式子，解除即可

作者: EGHJUYMN 时间: 2010-8-4 20:25

10 fewer of .... 是什么意思？

作者: anchoretes 时间: 2010-8-5 06:40

还是没懂。。。

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