document.write( "Question 150280: The length of a rectangle is equal to 3 times it's width. If the perimeter is equal to 240 ft. What is the lenght of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #110351 by mangopeeler07(462)\"\" \"About 
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length=3w
\n" ); document.write( "width=w\r
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\n" ); document.write( "\n" ); document.write( "2(3w)+2(w)=240\r
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\n" ); document.write( "\n" ); document.write( "6w+2w=240
\n" ); document.write( "8w=240\r
\n" ); document.write( "\n" ); document.write( "w=30
\n" ); document.write( "length=3(30)\r
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\n" ); document.write( "\n" ); document.write( "length=90
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