SOLUTION: Peter can paint a room in 5.5 hours. His brother can do the same job in 7.5 hours. How long will it take them to paint the room together?

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Question 1168536: Peter can paint a room in 5.5 hours. His brother can do the same job in 7.5 hours. How long
will it take them to paint the room together?
Answer by ikleyn(52754)   (Show Source): You can put this solution on YOUR website!
.

With such ugly numbers, it makes no sense to explain the procedure of solution.


Use the final formula  T = .


If you can not compute it mentally, use your calculator.



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