A cistern has two inlets A and B which can fill it in 12 hours and 15 hours respectively. An outlet can empty the full cistern in 10 hours. If all the three pipes are opened together in the empty cistern, how much time will they take to fill the cistern completely?

A cistern has two inlets A and B which can fill it in 12 minutes and 15 minutes respectively. An outlet C can empty the full cistern in 10 minutes.If all the three pipes are opened together in the empty tank,how much time will they take to fill the tank completely?

A tap A can fill a cistern in 4 hours and the tap B can empty the full cistern in 6 hours. If both the taps are opened together in the empty cistern, in how much time will the cistern be filled up?

Two pipes can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all the three pipes are kept open, then the cistern will be filled in :

Two pipes A and B can separately empty a cistern in 12 hours and 15 hours respectively. In what time will the cistern be emptied, if both the pipes are opened together ?

Pipes A and C can fill an empty cistern in 32 and 48 hours, respectively while Pipe B can drain the filled cistern in 24 hours. If the three pipes are turned on together when the cistern is empty, how many hours will it take for the cistern to be 2/3 full?

Two pipes, when working one at a time, can fill a cistern in 3 hours and 4 hours,respectively while a third pipe can drain the cistern empty in 8 hours. All the three pipes were opened together when the cistern was 1/12 full. How long did it take for the cistern to be completely full?

A cistern has three pipes A, B and C. A and B can fill it in 3 hrs and 4 hrs respectively while C can empty the completely filled cistern in 1 hour. If the pipes are opened in order at 3 PM., 4 P.M. and 5 P.M. respectively, at what time will the cistern be empty?