SOLUTION: The width of a retangle is 15 feet less than its length, and the perimeter is 210 feet. Can you show me how to find the width and the length.

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Question 60959: The width of a retangle is 15 feet less than its length, and the perimeter is 210 feet. Can you show me how to find the width and the length.
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
W=L-15
P=2L+2W
210=2L+2(L-15)
210=2L+2L-30
4L=210+30
4L=240
L=240/4
L=60 THEN
W=60-15
W=45
PROOF
210=2*60+2*45
210=120+90
210=210