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NO.1602
中等
00:00
本题平均耗时：4分04秒
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正确率：63%
A pound of tea makes 210 cups of tea, and a pound of coffee makes 40 cups of coffee. It, on the average, a restaurant serves 12 times as many cups of coffee as tea, what is the ratio of pounds of tea to pounds of coffee used at the restaurant?
\(\frac {1} {63}\)
\(\frac {6} {125}\)
\(\frac {1} {12}\)
\(\frac {4} {21}\)
\(\frac {16} {7}\)
Select one answer choice.
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