Pipe and Cistern Questions for SSC and Bank Exams

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Pipe and Cistern Questions
Q :  

One fill pipe A takes 3 minutes more to fill the cistern than two fill pipes A and B opened together to fill it. Second fill pipe B takes $$ {21{1\over 3}}$$ minutes more to fill cistern than two fill pipes A and B opened together to fill it. When will the cistern be full if both pipes are opened simultaneously?

(A) 7 minutes

(B) 16 minutes

(C) 8 minutes

(D) 10 minutes

(E) 12 minutes


Correct Answer : C

Q :  

If all three pipes are opened for 2 minutes to fill the tank each alternatively in the sequence of A then C and then B.  Calculate water filled by pipes A is what % of water filled by pipe C?

(A) 72.5 %

(B) 75 %

(C) 77.5 %

(D) 80 %

(E) 82.5 %


Correct Answer : B

Q :  

A pump can fill a cistern in 40 minutes and another pump can empty the filled up cistern in 1 hour. By mistake, without closing the second pump, the first pump is opened. The time in which the empty cistern will be filled up is

(A) 3 hours

(B) 4 hours

(C) 1 hours

(D) 2 hours


Correct Answer : D

Q :  

A cistern can be filled by two pipes filling separately in 12 and 16 min respectively. Both pipes are opened together for a certain time but being obstructions, only 7/8 of full quantity water flows through the former and only 5/6 through the latter pipe. The obstructions, however, being suddenly removed, the cistern is filled in 3 minutes from that moment. How long was it obstructions before the full flow began? 

(A) 4.5 min

(B) 2.5 min

(C) 3.5 min

(D) 5.5 min


Correct Answer : A

Q :  

If 20 taps can fill a tank in 14 hours, then how many times will 35 taps fill that tank?

(A) 8 hour

(B) 6 hour

(C) 14 hour

(D) 10 hour


Correct Answer : A

Q :  

Pipes A and B together can fill a tank in 16 hours, whereas pipe C alone can empty the full tank in 24 hours. A and B were opened together for 10 hours and then closed. Pipe C was then opened. The tank will now be emptied by C in:

(A) 18 hours

(B) 14 hours

(C) 16 hours

(D) 15 hours


Correct Answer : D

Q :  

Pipes  A and B are emptying pipes and can empty a tank in 6 hours and 16 hours, respectively. C is a filling a pipe. All the three pipes were opened together. They took 80 minutes to empty $$ {5\over 8}th$$ of the tank. Pipe C alone can fill the tank in:

(A) 36 hours

(B) 42 hours

(C) 48 hours

(D) 40 hours


Correct Answer : C

Q :  

Four pipes P, Q, R and S can fill a cistern in 25, 20, 50 and 40 hours respectively. The pipe Q was opened at 7 pm, P at 9 pm, S at 10 pm and R at 11 pm. When will the cistern be full?

(A) 3 : 29 AM

(B) 2 : 47 AM

(C) 4 : 09 AM

(D) 5 : 02 AM


Correct Answer : C

Q :  

A pipe can fill a tank in 72 minutes. But there is a leak in the bottom of the tank due to which the tank is filled in 18 minutes more. Find in how many hours the leak can empty a full tank ?

(A) 7 hrs

(B) 6.5 hrs

(C) 9 hrs

(D) 6 hrs


Correct Answer : D

Q :  

Two pipes, A and B, can fill a tank in X minutes and 6 minutes, respectively. If both the pipes are used together, then they take 1.5 minute to fill the tank. Find the value of X.

(A) 1 min

(B) 4 min

(C) 5 min

(D) 2 min


Correct Answer : D

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    Vikram Singh

    Providing knowledgable questions of Reasoning and Aptitude for the competitive exams.

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