SOLUTION: The perimeter of a rectangle is 136ft. The length is 3 times the width. Find the dimensions of the rectangle.

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Question 185050: The perimeter of a rectangle is 136ft. The length is 3 times the width. Find the dimensions of the rectangle.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

Working Eqn--->P=2L%2B2W
But, L=3W, and subst. to Working Eqn:
P=2%283W%29%2B2W
136ft=6W%2B2W
136=8W------->cross%28136%2917%2Fcross%288%29=cross%288%29W%2Fcross%288%29
highlight%28W=17ft%29
And, L=3%2A17=highlight%2851ft=L%29
Check,
136ft=2%2A51%2B217
136ft=102ft%2B34ft
136ft=136ft
Thank you,
Jojo