If the average of the assessed values of x houses is 212000,y other houses is 194000,what's the average of the assessed values of the(x+y) houses?
1. X+Y=36 2.X=2Y
选项大家都知道，答案是两个在一起才充足。作者: caicainiao 时间: 2011-4-29 22:36
answer is B，OA is wrong
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