题目信息
Ben is driving on the highway at x miles per hour. (One mile equals 5,280 feet.) Ben's tires have a circumference of y feet. Which of the following expressions gives the number of revolutions each wheel turns in one hour?
A:5,280$$(\frac{x}{y})$$
B:5,280$$(\frac{y}{x})$$
C:5289(xy)
D:$$5280\over({xy})$$
E:$$(xy)\over({5280})$$
参考答案及共享解析

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正确答案:
A:5,280$$(\frac{x}{y})$$
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题目来源
Manhattan