document.write( "Question 601627: 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?
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Algebra.Com's Answer #379915 by nerdybill(7384)\"\" \"About 
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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
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