SOLUTION: The length of a rectangle is 4 m greater than 5 times its width. Find the rectangle's dimensions if the perimeter is 20 meters.

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Question 227240: The length of a rectangle is 4 m greater than 5 times its width. Find the rectangle's dimensions if the perimeter is 20 meters.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=5W+4
2L+2W=20
2(5W+4)+2W=20
10W+8+2W=20
12W=20-8
12W=12
W=1 ANS. FOR THE WIDTH.
L=5*1+4=5+4=9 ANS. FOR THE LENGTH.
PROOF:
2*9+2*1=20
18+2=20
20=20