document.write( "Question 70730: The length of a rectangular playing field is 5 ft less than twice its width.
\n" ); document.write( "If the perimeter of the playing field is 230 ft, find the length and width of the field.
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Algebra.Com's Answer #50488 by checkley75(3666)\"\" \"About 
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L=(2W-5) THEN 2W+2L=230
\n" ); document.write( "2W+2(2W-5)=230
\n" ); document.write( "2W+4W-10=230
\n" ); document.write( "6W=230+10
\n" ); document.write( "6W=240
\n" ); document.write( "W=240/6
\n" ); document.write( "W=40 FT.
\n" ); document.write( "L=2*40-5
\n" ); document.write( "L=80-5
\n" ); document.write( "L=75 FT.
\n" ); document.write( "PROOF
\n" ); document.write( "2*40+2*75=230
\n" ); document.write( "80+150=230
\n" ); document.write( "230=230
\n" ); document.write( "
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