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  3. 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

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

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问题 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?
选项 A、5:6
B、25:27
C、15:16
D、20:21
E、It cannot be determined from the information given.
答案E
解析 With no idea of what the quantifies actually are, there is no way to tell how adding 15 to each of them will affect their ratio; for example, if the quantities were 5 and 6, the new ratio would be 20:21, but if the quantities were 10 and 12, the ratio would be 25:27.
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