Ben can paint a kitchen in 5 hours. Courtney can paint the same room in 6 hours. How long will it take them, working together, to paint the kitchen?

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1/5+1/6=1/x
(6+5)/5*6)=1/x
11/30=1/x
11x=30
x=30/11
x=2.7 hours working togeter.

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