document.write( "Question 639877: george can do a job in 6 hours and john can do the same job in 4 hours. how long will it take to finish the job, if both of them work together?
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Algebra.Com's Answer #402916 by nerdybill(7384) $\"\"$ $\"About$

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george can do a job in 6 hours and john can do the same job in 4 hours. how long will it take to finish the job, if both of them work together?
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\n" ); document.write( "Let x = time (hours) it takes for both
\n" ); document.write( "then
\n" ); document.write( "x(1/6 + 1/4) = 1
\n" ); document.write( "multiplying both sides by 12:
\n" ); document.write( "x(2 + 3) = 12
\n" ); document.write( "x(5) = 12
\n" ); document.write( "x = 12/5
\n" ); document.write( "x = 2.4 hours
\n" ); document.write( "or
\n" ); document.write( "x = 2 hours and 24 minutes
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