作者slept (谁比谁坚强)
看板GMAT
标题Re: [问题] GWD-tt-Math 5
时间Mon Nov 17 15:26:52 2008
※ 引述《moli1984 (ME LLAMO VICENTE)》之铭言：
: Q8.
: -------------
: l///l l//ll }3
: l---l----l---l
: l l////l l }3
: l---l----l---l
: l///l l///l }3
: l---l----l---l
: ~x~~ ~3~
: The figure above represents a square garden that is divided into 9
: rectangular regions with indicated dimensions in meters. The shaded regions
: are planted with peas, and the unshaded regions are planted with tomatoes.
: If the sum of the areas of the regions planted with peas is equal to the sum
: of the areas of the regions planted with tomatoes, what is the value of x?
: A. 0.5
: B. 1
: C. 1.5
: D. 2
: E. 2.5
: 答案给(c) 可是我却一直算成(d)耶～
令中间那栏=9-3-X=6-x
因为下面两列阴影跟非阴影的面积恰好相等
所以针对第一列来列式
3*x+3*3=(6-x)*3 ==>x=1.5
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