Bob can paint a fence in 5 hours and working with jen, the two of them can paint the same fence in 2 hours. how long would it take for jen to paint the fence alone?
Accepted Solution
A:
Bob ;
5 hours = 1 fence 1 hour = 1/5 fence
Together: 2 hours = 1 fence 1 hour = 1/2 fence
Jen: 1 hour = 1/2 - 1/5= 5/10 - 2/10 = 3/10
Find the amount of time Jen will need: 3/10 fence = 1 hour 1/10 fence = 1/3 hour 10/10 fence = 10/3 hour = 3 1/3 hours
Answer: Jen will take 3 1/3 hours to paint the fence alone.