Question 812029
Let's think about the problem to see if your answer is reasonably within range.
Kevin can paint the house alone in 8 hours. Josh is a little slower.
If they both could do it in 9 hours alone they should finish the job together in 4.5 hours.
You came up with 4.44 hours which is pretty close. So it is a reasonable answer within range.
It is 4.44 hours.