document.write( "Question 219166: The lenght of a rectangle is 3 time the width. The perimeter is 120m. Find the lenght and width \n" ); document.write( "
Algebra.Com's Answer #164887 by checkley77(12844)\"\" \"About 
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L=3W
\n" ); document.write( "2L+2W=120
\n" ); document.write( "2*3W+2W=120
\n" ); document.write( "6W+2W=120
\n" ); document.write( "8W=120
\n" ); document.write( "W=120/8
\n" ); document.write( "W=15 M. IS THE WIDTH.
\n" ); document.write( "L=3*15=45 M. FOR THE LENGTH.
\n" ); document.write( "pROOF:
\n" ); document.write( "2*45+2*15=120
\n" ); document.write( "90+30=120
\n" ); document.write( "120=120
\n" ); document.write( "
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