问题
单项选择题
A store currently charges the same price for each towel that it sells. If 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
参考答案：C
解析：
做对本题的关键是对后半句“10 fewer of the towels could be bought for $120”的理解，该句用的是虚拟语气，意为“120美元可以购买的毛巾数量少10条”。设目前每条毛巾的价格为x美元，则由题意可列出以下方程：
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