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请教OG-DS-49


data sufficiency:

of the 230 single-family homes built in City X last year;how many were occupied at the end of the year?

(1) of all single-family homes in City X;90 percent were occupied at the end of last year.

(2) a total of 7200 single family homes in City X were occupied at the end of last year.

thanks a lot !

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答案是e吗?

去年某市新建230栋房子,问这230栋中有多少栋到年底时有人入住?

条件1,去年年底,某市所拥有的所有房子中,90%的有人入住,并没有说去年新建的入住了多少,不充分

条件2,去年年底一共有7200栋房子被入住,没有和新建房屋建立任何关系,不充分.

两个条件合起来,也只能算出,去年年底时,某市一共有8000栋这种住房,anyway...和那230栋新造的房子没有关系,选e

TOP

谢谢版主!!!!

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