题目信息
If AD = 3x, AE = 5x, EB = y and DC = 5y, what is the ratio of the area of triangle DEC to the area of rectangle ABCD ?
Note: Figure not drawn to scale

Note: Figure not drawn to scale

A:2:7
B:1:3
C:2:5
D:1:2
E:3:5
参考答案及共享解析

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已选答案:
正确答案:
D:1:2
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题目来源
Magoosh