求解og12一道数学题 152

christinashao · 发表于 2010-7-19 23:53:24

请问各位nn们一道og12数据充分性题 152 carmen tapes 那道题解题思路是什么啊？？感激不尽~~~

xiaomimi · 发表于 2010-7-20 09:16:30

Let x stands for the number of tapes Carmen has and y stands for that of R
x+12=2y is given
x=2y-12, now compare x with y, it is also 2y-12 with y
2y-12 <>= y
12 is a seperating point but 5 is not.

求解og12一道数学题 152

所属分类: GMAT考试

正在浏览此版块的会员 ()