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Two pipes A and B can separately fill a cistern in 60 minutes and 75 minute respectively. There is a third pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time can the third pipe alone empty the cistern?
  • a)
    110 minutes
  • b)
    100 minutes
  • c)
    120 minutes
  • d)
    90 minutes
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Two pipes A and B can separately fill a cistern in 60 minutes and 75 m...
Work done by the third pipe in 1 min. = 1/50 - ( 1/60 + 1/75 )
= ( 1/50 - 3/100 )
= - 1/100
Therefore, the third pipe alone can empty the cistern in 100 min
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Two pipes A and B can separately fill a cistern in 60 minutes and 75 minute respectively. There is a third pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time can the third pipe alone empty the cistern?a)110 minutesb)100 minutesc)120 minutesd)90 minutesCorrect answer is option 'B'. Can you explain this answer?
Question Description
Two pipes A and B can separately fill a cistern in 60 minutes and 75 minute respectively. There is a third pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time can the third pipe alone empty the cistern?a)110 minutesb)100 minutesc)120 minutesd)90 minutesCorrect answer is option 'B'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Two pipes A and B can separately fill a cistern in 60 minutes and 75 minute respectively. There is a third pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time can the third pipe alone empty the cistern?a)110 minutesb)100 minutesc)120 minutesd)90 minutesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two pipes A and B can separately fill a cistern in 60 minutes and 75 minute respectively. There is a third pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 minutes. In how much time can the third pipe alone empty the cistern?a)110 minutesb)100 minutesc)120 minutesd)90 minutesCorrect answer is option 'B'. Can you explain this answer?.
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