Question 1094537: 3 pumps working 8 hours a day can empty a tank in 2hours,how many hours in a day must 4 pumps work to empty the tank Found 2 solutions by addingup, ikleyn:Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! working 8 hours a day? Why do you want to work 8 hours a days? You say the pumps will be done emptying the tank in 2 hours.
I think there is information missing. Check what you wrote.