document.write( "Question 804451: The length of a rectangle is twice the width. The perimeter is 24 units. What are the length and width? \n" ); document.write( "
Algebra.Com's Answer #484739 by erica65404(394)\"\" \"About 
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Perimeter=length+length+width+width
\n" ); document.write( "P=2length+2width
\n" ); document.write( "\"24=2L%2B2W\"
\n" ); document.write( "\"L=2W\"
\n" ); document.write( "plug into perimeter equation to find the width
\n" ); document.write( "\"24=2%282W%29%2B2W\"
\n" ); document.write( "\"24=6W\"
\n" ); document.write( "\"W=4\"
\n" ); document.write( "plug width into perimeter equation
\n" ); document.write( "\"24=2L%2B2%284%29\"
\n" ); document.write( "\"24=2L%2B8\"
\n" ); document.write( "\"16=2L\"
\n" ); document.write( "\"L=8\"
\n" ); document.write( "The answer is: the length is 8 units and the width is 4 units.
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