题目信息
The perimeter of rectangle A is 200 meters. The length of rectangle Bis 10 meters less than the length of rectangle A and the width of rectangle B is 10 meters more than the width of rectangle A. If rectangle B is a square, what is the width, in meters, of rectangle A ?
A:10
B:20
C:40
D:50
E:60
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正确答案:
C:40
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