document.write( "Question 751558: If BIll can clean the garage in 4 hours and John can clean the same garage in 3 hours, how many hours will it take them to clean the garage if they work together? \n" ); document.write( "
Algebra.Com's Answer #457284 by stanbon(75887)\"\" \"About 
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If BIll can clean the garage in 4 hours and John can clean the same garage in 3 hours, how many hours will it take them to clean the garage if they work together?
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\n" ); document.write( "Bill rate: 1/4 job/hr
\n" ); document.write( "John rate: 1/3 job/hr
\n" ); document.write( "together rate: 1/x job/hr
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\n" ); document.write( "Equation:
\n" ); document.write( "rate + rate = together rate
\n" ); document.write( "1/4 + 1/3 = 1/x
\n" ); document.write( "3x + 4x = 12
\n" ); document.write( "7x = 12
\n" ); document.write( "x = 12/7 = 1 5/12 = 1hr 25 min (time to do the job together)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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