SOLUTION: The width of a rectangular picture is one-half the length. The perimeter is 72 inches. Find the length. IM LOST!

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Question 307856: The width of a rectangular picture is one-half the length. The perimeter is 72 inches. Find the length. IM LOST!
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let the length be x inches
the width is 1/2 x
Perimeter = 2L+2W
2x+2*1/2 x = 72
2x+ 5x/2 = 72
4x+5x / 2 =72
9x= 144
x=16 inches
The length is 16 inches