Pipe and Cistern (Railway Maths) (Part – II)

Total Questions: 39

21. Pipe A can fill a tank in 6 hours. Pipe B can empty it in 15 hours. If both the pipes are opened simultaneously, in how many hours the tank will be filled ? [ALP Tier II 23/01/2019 (Morning) ]

Correct Answer: (c) 10
Solution:

22. Pipes A and B can fill a tank in 15 and 10 hours respectively. Pipe C can empty it in 40 hours. If all the three pipes are opened simultaneously, the tank will be filled by: [ALP Tier II 08/02/2019 (Morning) ]

Correct Answer: (a) 120/17 hours
Solution:

23. Two pipes, when working one at a time, can fill a cistern in 3 hours and 4 hours, respectively while a third pipe can drain the cistern empty in 8 hours. All the three pipes were opened together when the cistern was 1/12 full. How long did it take for the cistern to be completely full? [RRB ALP 09/08/2018 (Afternoon) ]

Correct Answer: (b) 2 hours
Solution:

24. Working together, pipes A and B can fill an empty tank in 10 hours. They worked together for 4 hours and then B stopped and A continued filling the tank till it was full. It took a total of 13 hours to fill the tank. How long would it take A to fill the empty tank alone ? [RRB ALP 09/08/2018 (Evening) ]

Correct Answer: (c) 15 hours
Solution:

25. Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours, respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously when the cistern is three-fifth full, how many hours will be needed to fill the cistern? [RRB ALP 10/08/2018 (Afternoon)]

Correct Answer: (b) 24/11
Solution:

26. Sita's bucket has thrice the capacity as Rama's bucket. It takes 60 turns for Sita's bucket to fill the empty drum. How many turns it will take for both the buckets of Sita's and Ramu's, having each turn together to fill the empty drum? [RRB ALP 10/08/2018 (Afternoon)]

Correct Answer: (d) 45
Solution:

27. Find the answer of given question? [RRB ALP 13/08/2018 (Afternoon) ]

Correct Answer: (a) 9 min
Solution:

28. One pipe can fill an empty cistern in 4 hours while another can drain the cistern when full in 10 hours. Both the pipes were turned on when the cistern was half - empty. How long will it take for the cistern to be fill ? [RRB ALP 13/08/2018 (Evening) ]

Correct Answer: (b) 3 hours 20 minutes
Solution:

29. Pipes A and C can fill an empty cistern in 32 and 48 hours, respectively while Pipe B can drain the filled cistern in 24 hours. If the three pipes are turned on together when the cistern is empty, how many hours will it take for the cistern to be 2/3 full? [RRB ALP 14/08/2018 (Afternoon) ]

Correct Answer: (b) 64
Solution:

30. Find the answer of given question? [RRB ALP 17/08/2018 (Morning) ]

Correct Answer: (c) 8 hours
Solution: