SOLUTION: A rectangle has length three times its width. The perimeter of the rectangle is 56 inches. Find the length of the rectangle.

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Question 201071This question is from textbook I can Learn Algebra Vol. 1
: A rectangle has length three times its width. The perimeter of the rectangle is 56 inches. Find the length of the rectangle. This question is from textbook I can Learn Algebra Vol. 1

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=3W
2L+2W=56
2*3W+2W=56
6W+2W=56
8W=56
W=56/8
W=7 ANS. FOR THE WIDTH
L=3*7=21 ANS. FOR THE LENGTH.
Proof:
2*21+2*7=56
42+14=56
56=56