document.write( "Question 1051086: Please help me how to solve this problem.\r
\n" ); document.write( "\n" ); document.write( "The width of a rectangle is fixed at 20 cm and the perimeter can be no greater than 100 cm. Find the maximum length of the rectangle.
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Algebra.Com's Answer #666672 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
The perimeter of a rectangle is,
\n" ); document.write( "\"P=2L%2B2W\"
\n" ); document.write( "\"P%3C=100\"
\n" ); document.write( "Substituting,
\n" ); document.write( "\"2L%2B2W%3C=100\"
\n" ); document.write( "\"L%2BW%3C=50\"
\n" ); document.write( "\"L%2B20%3C=50\"
\n" ); document.write( "\"highlight%28L%3C=30%29\"
\n" ); document.write( "So the maximum length is 30 cm.
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