SOLUTION: if bob can paint a garage in 3 hrs and bill paints a garage in 5 hrs, how long would it take to paint the garage if they work together?

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Question 212527: if bob can paint a garage in 3 hrs and bill paints a garage in 5 hrs, how long would it take to paint the garage if they work together?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3*5/(3+5)=15/8=1.875 hrs. ans.