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Two pipes can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all the three pipes are kept open, then the cistern will be filled in :
  • a)
    12 hours
  • b)
    5 hours
  • c)
    8 hours
  • d)
    10 hours
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Two pipes can fill a cistern in 3 hours and 4 hours respectively and a...
Using Rule 2,
Part of the cistern filled in 1 hour

[Cistern filled by 1st pipe + Cistern filled by 2nd pipe - Cistern emptied by 3rd pipe]

Hence, the cistern will be filled in 12 hours.
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Two pipes can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all the three pipes are kept open, then the cistern will be filled in :a)12 hoursb)5 hoursc)8 hoursd)10 hoursCorrect answer is option 'A'. Can you explain this answer? for SSC CGL 2026 is part of SSC CGL preparation. The Question and answers have been prepared according to the SSC CGL exam syllabus. Information about Two pipes can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all the three pipes are kept open, then the cistern will be filled in :a)12 hoursb)5 hoursc)8 hoursd)10 hoursCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for SSC CGL 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two pipes can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all the three pipes are kept open, then the cistern will be filled in :a)12 hoursb)5 hoursc)8 hoursd)10 hoursCorrect answer is option 'A'. Can you explain this answer?.
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