SOLUTION: The length of a rectangle is 3 timess the width. The perimeter is 120 meters. Find the length and width.

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Question 26204: The length of a rectangle is 3 timess the width. The perimeter is 120 meters. Find the length and width.
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
Formula for perimeter of regtangle;
p=2l+2w;
With the values given solve the equation;
p=120
l=3w
120=2(3w)+2w
120=6w+2w
120=8w
15=w
So the width = 2(15)
w=30
l=3w=3(15)=45
check;
120=2(45)+2(15)
120=90+30
=)