Question

If Jim Roller can paint a room in 3 hours while John Brush would take 5 hours, how long will they take if they work together?

Answer 1

4 hrs

Explanation:

half of Jim Rollers time is 1.5 hrs, and half of John Brushs time is 2.5 hrs. The two combined is 4 hrs. Therefore, the answer is four hours.

This is basically finding the average of two numbers, and you can use multiple different equations to find the same answer.

3/2 + 5/2 =4

(3+5)/2 =4

5-3=2, then 2/2=1, 5-1=4

Answer 2

1 7/8 hours

Explanation: