Question
Tap P can fill the tank in 5 hours and Tap Q can empty it in hours. Tap P starts filling and they opened for 1 hour each alternatively. In what time will the tank be full?
2 Hours = 1 work done 
Last work will be done by P Therefore, 15 -3 = 12 
More Pipes and cisterns Questions
- Pipe ‘A’ and pipe ‘B’, together can fill 20% of a tank in 4 hours while pipe ‘C’ takes 25 hours to empty it. Pipe ‘A’ and pipe ‘B’ were opened together. Af...
- Pipe A can fill a tank in 6 hours, pipe B in 8 hours, and pipe C can empty it in 12 hours. All three are opened together for 2 hours, after which pipe C is...
- A and B can fill a tank in 9 hours and 18 hours respectively. Pipe C can empty it in ‘x’ hours. If all three pipes are opened, the tank is filled in 4 hour...
- Pipe ‘E’ alone can fill a tank in 15 hours. When pipe ‘E’ and ‘F’ are opened together, they can fill 90% of the same tank in 9 hours. Find the time taken b...
- Pipe A can fill a tank in 12 hours and pipe B in 18 hours. If both the pipes are opened in an empty tank, how much time will they take to fill it?
- Pipe ‘M’ alone can fill a tank in 18 hours. When pipe ‘M’ and ‘N’ are opened together, they can fill 50% of the same tank in 6 hours. Find the time taken b...
- Two pipes, A and B, can independently fill the tank in 20 minutes and 25 minutes respectively, while pipe C can empty 7 gallons from the tank in 5 minutes....
- If a tank can be filled by a tap in 14 hours, but due to an outlet, it actually takes 4 hours longer to fill the tank, find the duration in which the outle...
- An inlet pipe can fill an empty tank in 12 minutes whereas an outlet pipe can empty the fully filled tank in 18 minutes. Find the time taken by both the pi...
- An inlet pipe can fill a tank in 8 hours, whereas an outlet pipe can empty the same tank in 16 hours. Find the time taken by three such inlet pipes and two...
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)