document.write( "Question 190419: If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?\r
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Algebra.Com's Answer #142911 by stanbon(75887)\"\" \"About 
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If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
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\n" ); document.write( "Sally DATA:
\n" ); document.write( "time = 4 hrs/job ; rate = 1/4 job/hr
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\n" ); document.write( "John DATA:
\n" ); document.write( "time = 6 hrs/job ; rate = 1/6 job/hr
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\n" ); document.write( "Together DATA:
\n" ); document.write( "time = x hrs/job ; 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 + 1/6 = 1/x
\n" ); document.write( "3x + 2x = 12
\n" ); document.write( "x = 12/5 = 2.4 hrs (time for them to do the job together)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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