SOLUTION: Ben paints a house in 30 hours and Amy paints one in 82.5 hours. How long does it take to paint the house together?
Algebra ->
Rate-of-work-word-problems
-> SOLUTION: Ben paints a house in 30 hours and Amy paints one in 82.5 hours. How long does it take to paint the house together?
Log On
You can put this solution on YOUR website! Ben paints a house in 30 hours and Amy paints one in 82.5 hours.
How long does it take to paint the house together?
:
let t = time required when working together
let the competed job = 1 + = 1
multiply equation by 330, cancel the denominators
11t + 4t = 330
15t = 330
t = 330/15
t = 22 hrs working together
