大家看看这道题(DS)

bananaland

town T has 20000 residents, 60% of whom are female. What percent of the residents were born in town T?

(1) the number of female residents who were born in Town T is twice the number of male residents who were not born in Town T.

(2) the number of female residents who were not born in Town T is twice the number of female residents who were born in Town T.

为什么选B?

bananaland

没人知道么？

jeannefq

怎么觉得是C...

bananaland

嗯，我也选的c，难道答案错了

jeannefq

哪里的题目?

bananaland

的数学书

bananaland

居然名字给屏蔽了，就是一个gmat培训机构出的数学辅导书，不是新东方，是另一个。

舐水精灵

以下是引用bananaland在2007-11-21 20:47:00的发言：

town T has 20000 residents, 60% of whom are female. What percent of the residents were born in town T?

(1) the number of female residents who were born in Town T is twice the number of male residents who were not born in Town T.

(2) the number of female residents who were not born in Town T is twice the number of female residents who were born in Town T.

为什么选B?

感觉应该选C吧，算出来female born in town T 是8000，male born in town T 是4000，

总体percent of residents born in town T 是60%