document.write( "Question 601627: jim mows a lawn in 5 hours.
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document.write( "tom mows the same lawn in 7 hours.
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document.write( "how long will both of them mow the same lawn? \n" );
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Algebra.Com's Answer #379915 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! jim mows a lawn in 5 hours. \n" ); document.write( "tom mows the same lawn in 7 hours. \n" ); document.write( "how long will both of them mow the same lawn? \n" ); document.write( ". \n" ); document.write( "Let x = time (hours) for both \n" ); document.write( "then \n" ); document.write( "x(1/5 + 1/7) = 1 \n" ); document.write( "multiply both sides by common denominator of 35: \n" ); document.write( "x(7 + 5) = 35 \n" ); document.write( "x(12) = 35 \n" ); document.write( "x = 35/12 \n" ); document.write( "x = 2.9167 hours \n" ); document.write( "or \n" ); document.write( "x = 2 hours and 55 minutes \n" ); document.write( " \n" ); document.write( " |