document.write( "Question 376166: The perimeter of a rectangle is 120 feet. Use an equation to find the length and width of the rectangle if the length is twice the width. \n" ); document.write( "
Algebra.Com's Answer #267572 by Jk22(389)\"\" \"About 
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let w be the width and l the length, the perimeter is p=2*(w+l)
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\n" ); document.write( "but l=2*w, then p=2*(w+2w)=2*3*w=6w=120feet
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\n" ); document.write( "we get : width=20feet, length=40feet
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