问一道GMAT数学真题

yyang22

If a certain grove consists of 36 pecan trees, what was the yield per tree last year?

　　(1) The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year.
　　(2) The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year.

这个题目我在各个网站和陈向东的书上看到的答案都是E， 但我觉得明显1+2很充分，大家怎么认为呢？

simonwpp

明显是northern＋eastern 组成不了total啊

keanzhao

simonwpp 发表于 2015-11-2 00:49
明显是northern＋eastern 组成不了total啊

Mark一下！