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试卷名称:GMAT（QUANTITATIVE）数学模拟试卷2

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The ratio of 2 quantifies is 5 to 6. If each of the quantities is increased by 15, what is the ratio of these two new quantifies?

A．5:6

B．25:27

C．15:16

D．20:21

E．It cannot be determined from the information given.

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