SOLUTION: the length of a rectangle is 5 inches more than the width. the perimeter is 70 inches. find the length.

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Question 315215: the length of a rectangle is 5 inches more than the width. the perimeter is 70 inches. find the length.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=W+5
P=2L+2W
70=2(W+5)+2W
70=2W+10+2W
70=4W+10
4W=17-10
4E=60
W=60/4
W=15 INCHES. ANS. FOR THE WIDTH.
L=15+5=20 INCHES ANS. FOR THE LENGTH.
PROOF:
70=2*20+2*15
70=40+30
70=70