Question

Sally can paint a room in 99 hours while it takes steve 44 hours to paint the same room. how long would it take them to paint the room if they worked​ together

Answer 1

I solved a problem like this recently and the answer was the two subtracted, ill say the answer is 55.

Answer 2

In one hour, Sally can paint 1/99 of the room.
In one hour, Steve can paint 1/44 of the room.
Working together for one hour they can paint the following fraction of the room:
$\frac{1}{99}+\frac{1}{44}=\frac{4+9}{396}=\frac{13}{396}$
Therefore, working together, they would take 396/13 = 30.46 hours to paint the room.
The answer is: 30.46 hours.