SOLUTION: the length of a rectangle is 3 times its width. the perimeter is 120 meters.fine the length and width.

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Question 245638: the length of a rectangle is 3 times its width. the perimeter is 120 meters.fine the length and width.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=3W
2L+2W=120
2*3W+2W=120
6W+2W=120
8W=120
W=120/8
W=15 M. FOR THE WIDTH.
L=3*15=45 M. FOR THE LENGTH.
PROOF:
2*45+2*15=120
90+30=120
120=120