document.write( "Question 1118459: The difference between the length and width of a rectangle is 8 units. The peremeter is 84 units. Find the length and width. \n" ); document.write( "

Algebra.Com's Answer #733770 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "L + W = 42   (half of the perimeter, or 84/2)\r\n" );
document.write( "L - W =  8\r\n" );
document.write( "----------------------Add the two equations\r\n" );
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document.write( "2L = 42 + 8 \r\n" );
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document.write( "2L = 50  ====>  L = 50/2 = 25.\r\n" );
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document.write( "Then W = 42 - 25 = 17.\r\n" );
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document.write( "Answer.  The length is 25 units, the width is 17 units.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Another solution.\r
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document.write( "L + W = 42\r\n" );
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document.write( "L + (L-8) = 42\r\n" );
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document.write( "2L - 8 = 42\r\n" );
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document.write( "2L = 42 + 8 = 50\r\n" );
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document.write( "L = 50/2 = 25,  and you get the same answer.\r\n" );
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