标题: 求教OG里的一道data sufficiency [打印本页] 作者: sunnycl 时间: 2010-7-13 17:42 标题: 求教OG里的一道data sufficiency OG quantitative 第一版中的data sufficiency中第十题不懂 of the 230 single-family homes built in city X last year, how many were ovvuoied 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 答案是E statements 1 and 2 together are not sufficient. 为什么2也是not sufficient啊？ 请教！！！谢谢！作者: crazyxxx 时间: 2010-7-13 17:47
貌似是不知道在230个里包括了多少吧,只知道所有single + occupied作者: sunnycl 时间: 2010-7-13 18:29
谢谢，但是还是不是很懂，问题不是occupied吗，2不是已经回答了有7200吗