[求助]pp3的一道数学---实在没有看懂！！求人指点

simbachu

做pp3时，居然被一道数学卡壳：

A store currently charges the same price for each towel that it sells. If the current price of each towel is to be increased by $1,10 fewer of the towel could be bought for $120, excluding sales tax. What is the current price of each towel?

答案是 $3

我没有看懂，什么是  10 fewer of the towel could be bought for $120  ？？ 觉得条件根本不够啊~~~~

十分不解，请路过的各位帮帮忙。

britney-gao

could的意思是也能够

x*y=120

(x+1)(y-10)=120

x=3 y=40

happypigfy

同意楼上的解答

tomatohuas

QUOTE:

以下是引用britney-gao在2007-10-10 13:36:00的发言：

could的意思是也能够

x*y=120

(x+1)(y-10)=120

x=3 y=40

agree