SOLUTION: the length of a rectagular parking lot is 4 meters less than twice its width and the perimeter is 316 meters, find the length of the parking lot.

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Question 313636: the length of a rectagular parking lot is 4 meters less than twice its width and the perimeter is 316 meters, find the length of the parking lot.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=2W-4
P=2L+2W
316=2(2W-4)+2W
316=4W-8+2W
6W=316+8
6W=324
W=324/6
W=54 ANS. FOR THE WIDTH.
L=2*54-4
L=108-4=104 ANS.
PROOF:
316=2*104+2*54
316=208+108
316=316