Homework Help: math

Posted by shelly on Thursday, November 29, 2007 at 10:44am.

The length of a rectangle is 10 feet more than twice its width. The perimeter of
the rectangle is 170 feet. Find the dimensions of the rectangle.

math - Reiny, Thursday, November 29, 2007 at 11:29am
let the width be x feet, then the length is 2x+10 feet

2(x) + 2(2x+10) = 170

6x + 20 = 170
x = 25

so the width is 25 feet and the length is 60 feet

check: is 2(25) + 2(60) = 170 ? Yes!

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