An empty cistern has three pipes A, B and C. A and B can fill it in 5 hours and 6 hours respectively and C can empty it in 2 hours. If these pipes are opened in order at 1 a.m., 2 a.m. and 3 a.m., when will the cistern be empty again? Options: A . &nbsp \(3\frac{1}{2}\) hr. after 3 am B . &nbsp \(3\frac{1}{4}\) hr. after 3 am C . &nbsp \(3\frac{2}{3}\) hr. after 3 am D . &nbsp \(3\frac{3}{2}\) hr. after 3 am

An empty cistern has three pipes A, B and C. A and B can fill it in 5 hours a

Question

An empty cistern has three pipes A, B and C. A and B can fill it in 5 hours and 6 hours respectively and C can empty it in 2 hours. If these pipes are opened in order at 1 a.m., 2 a.m. and 3 a.m., when will the cistern be empty again?

Options:

A . \(3\frac{1}{2}\) hr. after 3 am

B . \(3\frac{1}{4}\) hr. after 3 am

C . \(3\frac{2}{3}\) hr. after 3 am

D . \(3\frac{3}{2}\) hr. after 3 am

Answer: Option B

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Question 1. Two pipes A and B can separately fill a tank in 12 minutes and 15 minutes respectively. Both the pipes are opened tog....How much time will it take to fill the tank?

Question 2. Two pipes A and B can separately fill a cistern in 10 minutes and 15 minutes respectively. A person opens both the pipes....time can the waste pipe empty the cistern when full?

Question 3. A leak in the bottom of a tank can empty the full tank in 6 hours. An inlet pipe fills water at the rate of 4 litres ....emptied in 8 hours. The capacity of the tank is

Question 4. A pipe can fill a cistern in 12 minutes and another pipe can till it in 15 minutes. But a third pipe can empty it in 6 m....is also opened. In what time is the cistern emptied?

Question 5. A tap can fill a cistern in 6 hours, but due to a leakage at the bottom of the cistern, it takes 1 hours more to fill....off, in what time will the leakage empty the cistern?

Question 6. If two pipes function simultaneously, a reservoir will be filled in 12 hours. One pipe fills the reservoir 10 hours f....hours does the faster pipe take to fill the reservoir?

Question 7. There is a leak in the bottom of a cistern. Before the leak, it could be filled in \(3\frac{1}{2}\) hours, it now tak....full, the time taken to empty the cistern would be

Question 8. A filler pipe can fill \(\frac{1}{6}^{th}\) of a cistem in 10 minutes. In how many minutes, can it f....In how many minutes, can it fill \(\frac{5}{8}^{th}\) of the cistern?

Question 9. An outlet pipe can empty \(\frac{2}{3}^{rd}\) of a cistern in 12 minutes. In 8 minutes, what part of the cistern....8 minutes, what part of the cistern will be emptied?

Question 10. Two pipes can separately fill a tank in 20 hours and 30 hours respectively. Both the pipes are opened to fill the tan....What is the total time taken to fill the tank?

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