The length of a rectangle is three times the width. The area of the rectangle is 108 sq in. What is the width of the rectangle?
Answer
A
6 in.
B
9 in.
C
12 in.
D
36 in.
Explanation
Let the width be w inches, so the length is 3w inches. The area is w × 3w = 108, which gives w² = 36; since a width must be positive, w = 6. The width is 6 in., choice A.
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