document.write( "Question 20508: The length of a rectangle playing field is 5ft. less than twice its width. If the perimeter of the playing field is 230 ft, find the length and width of the field. \n" ); document.write( "
Algebra.Com's Answer #9858 by suresh(20)\"\" \"About 
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Perimeter of the rectangle is = 2 ( l + b ) ,where l is the length and b is the breath of the rectangle.\r
\n" ); document.write( "\n" ); document.write( "Let b be the width of the rectangle.\r
\n" ); document.write( "\n" ); document.write( "Given, l = 2 b - 5.\r
\n" ); document.write( "\n" ); document.write( "Also perimeter = 230 ft.\r
\n" ); document.write( "\n" ); document.write( "Therefore, 2 (2b - 5 + b ) = 230\r
\n" ); document.write( "\n" ); document.write( "2 ( 3b - 5) = 230\r
\n" ); document.write( "\n" ); document.write( "6b-10=230\r
\n" ); document.write( "\n" ); document.write( "6b=240
\n" ); document.write( "b=40.\r
\n" ); document.write( "\n" ); document.write( "l=2(40)-5=80-5=75.\r
\n" ); document.write( "\n" ); document.write( "Hence, l = 75 and b= 40\r
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