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Quantitative Aptitude > Pipes and Cisterns > Pipes and Cisterns Practice Questions
Pipes and Cisterns

Pipes and Cisterns Practice Questions

Pipes and Cisterns Practice Questions has the important questions from the topics of inlet pipes and outlet pipes and cisterns. Here you will be asked to find the rate at which a tank or a cistern or a reservoir can be filled or emptied by an inlet or an outlet pipe. Pipes and Cisterns Practice Questions has all the important topics of this chapter. In Pipes and Cisterns Practice Questions, we have compiled for you a section which contains several previously asked questions in addition to worthy questions that shall test your grip on the concept. Let us begin our Pipes and Cisterns Practice Questions section below.

Pipes and Cisterns Practice Questions

Part A

Let us begin with the questions on data sufficiency. Each of the questions below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statements is/are necessary to answer the question.

Q1: A tank is fitted with two taps A and B. In how much time will the tank be full if both the taps are opened together?

I. A is 500% more efficient than B.

II. A alone takes 16 hours to fill the tank.

III. B alone takes 24 hours to fill the tank.

A) II and II only.                       B) All I, II and III.                        C) I and II only.                  D) I and III only                     E) Any two of the three.

Q2: If both the pipes are opened, how many hours will be taken to fill the tank?   [RBI 2003]

I. The capacity of the tank is 400 litres.

II. The pipe A fills the tank in 4 hours.

III. The pipe B fills the tank in 6 hours.

A) Only I and II                               B) Only II and III                             C) All I, II and III                  D) Any two of the three.                      E) Even with all the three statements, the answer cannot be given.

Pipes and Cisterns Practice Questions

Find Your Answers Here

Q1: E), Q2: B)

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Part B

Q1: Two taps A and B can fill a tank in 5 hours and 20 hours respectively. If both the taps are open then due to a leakage, it took 30 minutes more to fill the tank. If the tank is full, how long will it take for the leakage alone to empty the tank?

A) 4[1/2] hrs                   B) 9 hrs                       C) 18 hrs                   D) 36 hrs                         E) None of These

Q2: Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?   [NABARD, 2001]

A) One Hour                       B) Two Hours               C) Six Hours                      D) Eight Hours              E) None Of These

Q3: One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:                 [CBI 2003]

A) 81 min                          B) 108 min                              C) 144 min                          D) 192 min                 E) None Of These

Q4: A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?   [Bank PO 2003]

A) 20 hrs                      B) 25 hrs                       C) 35 hrs                        D) Cannot Be Determined

E) None Of These

Q5: A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:             [MBA 2002]

A) 6 hours                  B) 10 hours                  C) 15 hours                      D) 30 hours                     E) None Of These

Find Your Answers Here

Q1: D), Q2: C), Q3: C), Q4: C), Q5: C)

Part C

Q1: 12 buckets of water fill a tank when the capacity of each tank is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?

A) 8                 B) 15                  C) 16                   D) 18                       E) None Of These

Q2: Bucket P has thrice the capacity as buckets Q. It takes 60 turns for bucket P to fill the empty drum. How many turns it will take for both the buckets P and Q, having each turn together to fill the empty drum?

A) 30                B) 40                     C) 45                     D) 90                      E) None Of These

Q3: two pipes A and B can fill a tank in 12 minutes and 15 minutes respectively. If both the taps are opened simultaneously and the tap A is closed after 3 minutes, then how much more time will it take to fill the tank by tap B?

A) 7 min 15 sec                        B) 7 min 45 sec                    C) 8 min 5 sec                       D) 8 min 15 sec              E) None Of These

Q4: Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?                            [UPSC 2002]

A) 10 min 20 sec                         B) 11 min 45 sec                            C) 12 min 30 sec                 D) 14 min 40 sec                   E) None Of These

Find Your Answers Here

Q1: D), Q2: C), Q3: D), Q4: D)

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