SOLUTION: A pool can be filled by one pipe in 4 hours and by a second pipe in 10 hours. How long will it take using both pipes?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A pool can be filled by one pipe in 4 hours and by a second pipe in 10 hours. How long will it take using both pipes?       Log On


   

Question 837390: A pool can be filled by one pipe in 4 hours and by a second pipe in 10 hours. How long will it take using both pipes?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
1/4+1/10=1/x
4/40+10/40=1/x
14/40=1/x
7/20=1/x
3.5/10=1/x
10/3.5=x
2.86 =x