document.write( "Question 965701: It take 2 hours for 4 boys to mow 3 lawns of the same size. How long would it take 2 boys to mow 1 of these lawns? \n" ); document.write( "
Algebra.Com's Answer #590245 by josgarithmetic(39625)\"\" \"About 
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Uniform Rates for Work or Job;
\n" ); document.write( "RT=J for rate time job.\r
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\n" ); document.write( "\n" ); document.write( "Let one job be, mowing one lawn.\r
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\n" ); document.write( "\n" ); document.write( "Let r be the amount of lawns per hour for ONE boy.\r
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\n" ); document.write( "\n" ); document.write( "If 4 boys work together, then this rate is \"4r\".
\n" ); document.write( "Two boys together have rate of \"2r\".\r
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\n" ); document.write( "\n" ); document.write( "Let t be how much time for two boys to do the described ONE of these lawns.
\n" ); document.write( "\"system%28%284r%292=3%2C%282r%29t=1%29\";\r
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\n" ); document.write( "\n" ); document.write( "Solve the system.
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