SOLUTION: The perimeter of the state of Wyoming is 1280 mi. The width is 90 mi less than the length. Find the width and the length.

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Question 331762: The perimeter of the state of Wyoming is 1280 mi. The width is 90 mi less than the length. Find the width and the length.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let length be x mi
width = x-90 mi
..
perimeter = 2*(L+W)
1280 = 2*(x+x-90)
1280=2*(2x-90)
1280/2 = 2x-90
640 = 2x-90
640+90=2x
730=2x
x= 365 miles the length
..
width = 365 -90 = 275 miles
CHECK
275*2+365*2=550+730=1280