# Pipes and Cisterns

Pipes and Cisterns: Cistern meaning, Pipes and Cisterns Questions, Solved Problems

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## Online Aptitude Questions with Answers on Pipes and Cisterns

Q11. **A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?**

1.  15 min
2.  20 min
3.  27.5 min
4.  30 min

Solution : 30 min
Q12. **A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?**

1.  3 hrs 15 min
2.  3 hrs 45 min
3.  4 hrs
4.  4 hrs 15 min

Solution : 3 hrs 45 min

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Q13. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in:

1.  6 hours
2.  20/3 hour
3.  7 hour
4.  15/2 hour

Solution : 7 hour
Q14. **Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is:**

1.  10
2.  12
3.  14
4.  16

Solution : 14

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Q15. > The question given below consists of a question > and two statements numbered I and II given below it. You have to > decide whether the data provided in the statement(s) is / are > sufficient to answer the given question. Read the both statements and select: > > > (A) if the data in Statement I alone is sufficient to > answer the question, while the data in Statement II alone is not > sufficient to answer the question. > > > (B) if the data in Statement II alone is sufficient to > answer the question, while the data in Statement I alone is not > sufficient to answer the question. > > > (C) if the data either in Statement I or in Statement II > alone is sufficient to answer the question. > > > (D) if the data in both Statements I and II together > is not sufficient to answer the question. > > > (E) if the data in both Statements I and II together is > necessary to answer the question. **How much time will the leak take to empty the full cistern?** **I. The cistern is normally filled in 9 hours.** **II. It takes one hour more than the usual time to fill the cistern because of a leak in the bottom.**

1.  A
2.  B
3.  C
4.  D
5.  E

Solution : E
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