SOLUTION: Pump A can empty a pool in 20 hrs. and pump B can empty it in 24 hrs. Working together, how long will it take to empty the pool?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Pump A can empty a pool in 20 hrs. and pump B can empty it in 24 hrs. Working together, how long will it take to empty the pool?       Log On