Sally can paint a room in 44 hours while it takes steve 55 hours to paint the same room. how long would it take them to paint the room if they worked together?

First you have to find the number in between 44 and 55. 
First you subtract 55-44=11 then divide 11/2= 5.5 now just ad 44+5.5 and get 49.5.
Now that you have the middle number since there are two people painting the room you have to divide 49.5 by 2 and get 24.75
Final Answer 24.75 Hours

Then why is the question on here if you know the answer