CXD p209 77 请教！多谢！

Town T has 20,000 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 male residents who were born in Town T.

答案：C

答案分析：设出生在T的女性百分比x,出生在T的男性百分比为y,根据(1)得x=2(40%-y),根据(2)得2y+y=60%,解得y=20%,因此x可以顺利解出（看不懂）

我觉得答案E，我是这个思路：(1)+(2)的信息得到下表：

可见x,y无解

题目被他翻译错，搞混了！！！！晕