Problema Solution
Dally can paint a room in 6 hours while it takes Steve 9 hours to paint the same room. How long would it take them to paint the room if they worked together
Answer provided by our tutors
Dally's rate is: 1/6 room per hour
Steve's rate is: 1/9 room per hour
Let 'x' represent the hours needed for the room to be painted when Dally and Steve work together.
The together rate is: 1/x room per hour
1/6 + 1/9 = 1/x
........
click here to see the equation solved for x
........
x = 3.6 hr
x = 3 hr 0.6*60 min
x = 3 hr 36 min
It will take them 3 hours and 36 minutes for Dally and Steve to paint the room together.