SOLUTION: An inlet pipe on a swimming pool can be used to fill the pool in 14 hours. The drain pipe can be used to empty the pool in 15 hours. If the pool is 2/3 filled and then the inlet pi

Algebra ->  Rate-of-work-word-problems -> SOLUTION: An inlet pipe on a swimming pool can be used to fill the pool in 14 hours. The drain pipe can be used to empty the pool in 15 hours. If the pool is 2/3 filled and then the inlet pi      Log On


   

Question 958337: An inlet pipe on a swimming pool can be used to fill the pool in 14 hours. The drain pipe can be used to empty the pool in 15 hours. If the pool is 2/3 filled and then the inlet pipe and drain pipe are opened,how long from that time will it take to fill the pool?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Fill Rate 1%2F14
Drain Rate -1%2F15
The job, fill 1%2F3 of the pool.

%281%2F14-1%2F15%29%2At=1%2F3
Solve for t in hours.