Question
An inlet can fill an empty tank in 7 hours whereas an outlet pipe can empty it in 14 hours. If (N - 1) such outlet pipes having same efficiency and (N + 2) such inlet pipes having same efficiency are opened together, then the tank gets filled in 2 hours. How many inlet pipes are used?
Required number of inlet pipes used = N+2 = 2+2 = 4More Pipes and cisterns Questions
- Pipe P, Q, and R can fill a cistern in 18 hours, 36 hours, and 36 hours respectively. All pipes are opened together. Pipe P is closed after ‘x’ hours, Pipe...
- Two pipes A and B can fill a tank in 24 min., and 32 min, respectively. If both the pipes are opened simultaneously, after how much time B should be closed...
- Pipe 'A' can fill a tank in 15 hours. Pipe 'B' is ____% as efficient as pipe 'A'. If both pipes are opened simultaneously, the tank will be completely full...
- Two inlet pipes, each with the same capacity, can fill an empty tank 'A' together in 20 minutes. There is also an outlet pipe that can empty 40% of the tan...
- Together, the three intake pipes, "P," "Q," and "R," can fill a water tank in eight hours. While the three pipes are opened simultaneously, pipe "Q" closes...
- Pipe A and pipe B can fill the empty tank in 20 hours and 24 hours, respectively whereas pipe C can empty the full tank ‘x’ hours. Find the value of ‘x’ if...
- Two inlet pipes P and Q are used to fill a tank. Pipe P fills 25 liters in 5 hours and pipe Q fills 60 liters in 5 hours. Pipe P is kept open for 2 hours a...
- Pipe ‘A’ takes 40 minutes to fill a tank. Pipe ‘B’ takes 50 minutes to empty the same tank. If pipe ‘B’ is opened 21 minutes after pipe ‘A’, then find the ...
- Tap A and Tap B fill a drum of volume 425 liters in 17 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ciste...
- Pipe 'A' is twice as efficient as pipe 'B'. Pipe 'C', which is one-third as efficient as pipe 'B', can fill a tank alone in 27 hours. Find difference betwe...
Relevant for Exams:
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
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)