# tank

## Emptying a Tank

Submitted by ramelcoletana on February 28, 2021 - 1:05pm

Two pumps of different sizes, working

together, can empty a fuel tank in 5 hours.The larger pump

can empty this tank in 4 hours less than the smaller one. If the

larger pump is out of order, how long will it take the smaller

one to do the job alone?