GMAT
题目
P, Q, and R are each rectangles. The length and width of rectangle P are 30 percent less and 20 percent greater, respectively than the length and width of rectangle R.
The length and width of rectangle Q are 40 percent greater and 40 percent less, respectively than the length and width of rectangle R.
Quantity A
The area of rectangle P
Quantity B
The area of rectangle Q
解析
20% = 1/5；30% = 3/10；40% = 2/5。因此我们可以假设长方形的长和宽为10的倍数。
长方形R：
长L = 100
宽W = 100
长方形P：
长L = 120
宽W = 70
长方形Q：
长L = 140
宽W = 60
P的面积 = Q的面积 = 8400
选项C
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