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?

A cistern has three pipes A,B and C. Pipes Aand B can fill it in 3 and 4h,respectively,while pipe C can empty the completely filled cistern in 1 h. If the pipes are opened in order at 3:00 pm, 4:00 pm and 5:00 pm, respectively, at what time will the cistern be empty?

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?

Two pipes A & B can fill a tank in 15hr. & 20hr. respectively while pipe C can empty the completely filled tank 25hr. Three pipes are opened simultaneously. After 10hr. pipe C is closed. After what time will the tank be completely filled ?

Pipes A and B can fill an empty tank in 6 and 8 hours respectively, while pipe C can empty the full tank in 10 hours. If all three pipes are opened together, then the tank will get filled in:

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 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 ?

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?