[讨论]lsat 4-3-12

zxzhyzcy

zxzhyzcy

以下是引用zenger在2005-8-9 18:31:00的发言：

这是个数学题。

看到obses的定义“that is, who have more body fat than do 85 percent of North American children their age”，就应该马上树立起胖人比例永远不变15%的概念，就象GMAT700分一样。

因此，当看到胖人人数增加时，就已经猜到出题人一定是考总人数/胖人/瘦子同比增加的意图了。

呃……好强……完全没有这样的意识~佩服！

ssssss

Well, this is a pure math problem of amount and percentage. Per stimulus, North American Children is consist of obese (15%) and none-obese(85%). Since the percentage will never change, we can conclude that if the number of obese children increase, the total number of north American children will increase and at the result the none-obese north American children will increase. So, C is the right answer.