SOLUTION: joshua can paint a house in 30 hours. it takes andy 60 hours to do the same job. how long would it take both of them to paint the same house if they work together?
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Question 838562: joshua can paint a house in 30 hours. it takes andy 60 hours to do the same job. how long would it take both of them to paint the same house if they work together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/30+1/60=1/x
2/60+1/60=1/x
3/60=1/x
1/20=1/x
x=20
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