Question
Three pipes P, Q and R which are used to fill a tank. Each of the three pipes can be used either as an inlet pipe or as an outlet pipe. Each of the pipes P, Q and R can individually fill/empty the tank in 18 hours, 27 hours and 30 hours respectively. On a given day one pipe becomes outlet pipe and the remaining pipes become inlet and this continues alternatively. If on first day pipe P becomes outlet pipe, next day pipe Q and pipe R the following day, then in how many days will the tank be filled?
More Pipes and cisterns Questions
- Pipe ‘X’ alone can fill a tank in 20 hours. When pipe ‘X’ and ‘Y’ are opened together, they can fill 60% of the same tank in 6 hours. Find the time taken b...
- Pipe A can fill a tank in 20 minutes, Pipe B can fill it in 30 minutes and Pipe C can empty it in 40 minutes. All three pipes are opened together, but afte...
- Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 7) hours. If the efficiency of pipe B is double of pipe A and pipe A fill the ...
- Two inlet pipes 'A' and 'B' can fill an empty tank in 60 minutes and 120 minutes, respectively. Another outlet pipe 'C' can empty the tank in 240 minutes. ...
- A tank is filled by three pipes A, B, and C. Pipe A can fill the tank in 12 hours, pipe B in 16 hours, and pipe C can empty the tank in 8 hours. If all thr...
- Inlet pipes 'A', 'B' fill a tank in 30 and 15 minutes respectively. Outlet pipe 'C' is 50% less efficient than A. ‘A’ and ‘C’ work for 15 minutes, then 'A'...
- Tap A and Tap B fill a drum of volume 475 liters in 19 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ciste...
- Pipes P and Q can fill a tank in 12 hours and 15 hours respectively, while a third pipe C can empty the tank in 24 hours. If all three pipes are opened sim...
- Pipe ‘A’ can fill 25% of a tank in 3 hours while pipe ‘B’ takes 30 hours to empty fully filled tank. Pipe ‘A’ is opened alone when the tank was empty. Afte...
- Two inlet pipes M and N alone can fill a tank in 12 hours and 15 hours respectively and an outlet pipe P alone can empty the whole tank in 10 hours. First ...
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
