题目

In a group of adults, the ratio of women to men is 5 to 6, while the ratio of left-handed people to righthanded people is 7 to 9. Everyone is either left- or right-handed; no one is both.

Quantity A

The number of women in the group

Quantity B

The number of left-handed people in the group

选项

A.

Quantity A is greater.


B.

Quantity B is greater.


C.

The two quantities are equal.


D.

The relationship cannot be determined from the information given.

解析

我们假设有 \(x\) 个人。 由于总人数按女性和男性 **5:6** 的比例分配,我们可知女性人数为 \( \frac{5}{11}x \)。 同理,如果总人数 \(x\) 按**左撇子**和**右撇子**的比例划分,我们可知左撇子人数为 \( \frac{7}{16}x \)。 因为 \(x\) 是正数,所以 \( \frac{5}{11} > \frac{7}{16} \)。
在线客服
官方微信
公众号