document.write( "Question 661395: The perimeter of a rectangular field is 660 yards. If the width is 20 yards less than the length, than what is the length? \n" ); document.write( "
Algebra.Com's Answer #411592 by ReadingBoosters(3246)\"\" \"About 
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p = 2(l+w) = 2l+2w = 660
\n" ); document.write( "w= l - 20
\n" ); document.write( "Substitute w into the equation
\n" ); document.write( "660 = 2l + 2(l-20)
\n" ); document.write( "660 = 2l + 2l - 40
\n" ); document.write( "660 = 4l - 40
\n" ); document.write( "620 = 4l
\n" ); document.write( "155 yd = length
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