<PRE><B>Question 1061740</B>
It takes Nate five hours to paint a wall, and it takes Jill seven hours to paint the same wall. About how many hours will it will take if Nate and Jill work together to paint the wall? 
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rate + rate = together rate
1/5 + 1/7 = 1/x
7x + 5x = 5*7
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12x = 35
x = 2.92 hrs = 2 hr 55 minutes (time to do the job together)
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Cheers,
Stan H.
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