document.write( "Question 281677: The length of a rectangle is three times the width. If the perimeter is 40m, find the length and width? \n" ); document.write( "
Algebra.Com's Answer #217674 by JBarnum(2146)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "but anyway
\n" ); document.write( "L=3W
\n" ); document.write( "P=40
\n" ); document.write( "P=2L+2W
\n" ); document.write( "40=2(3W)+2W
\n" ); document.write( "40=8W
\n" ); document.write( "5=W
\n" ); document.write( "15=L
\n" ); document.write( "
\n" );