document.write( "Question 530977: The length of a rectangle is twice its width. The perimeter is 30 meters. Find the length and the width. \n" ); document.write( "

Algebra.Com's Answer #350280 by oberobic(2304) $\"\"$ $\"About$

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L = 2W
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\n" ); document.write( "P = 30
\n" ); document.write( "P = 2(L+W)
\n" ); document.write( "L + W = 15
\n" ); document.write( "L = 15-W
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\n" ); document.write( "L=L
\n" ); document.write( "so
\n" ); document.write( "2W = 15-W
\n" ); document.write( "3W = 15
\n" ); document.write( "W = 5
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\n" ); document.write( "L = 2W
\n" ); document.write( "L = 10
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\n" ); document.write( "Check the perimeter.
\n" ); document.write( "2(L-W) = 2(10+5) = 30 m
\n" ); document.write( "Correct.
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\n" ); document.write( "Answer: Length = 10 m, and width = 5 m.
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\n" ); document.write( "Done. \n" ); document.write( "

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