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A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A third pipe can empty the tank in 5 minutes. The first two pipes are kept open for 4 minutes in the beginning and then the third pipe is also opened. In what time will the tank be emptied?
  • a)
    3 min
  • b)
    5 min
  • c)
    2 min
  • d)
    Data inadequate 
  • e)
    None of these
Correct answer is option 'D'. Can you explain this answer?
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A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A...
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A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A...
Given data:
- Pipe 1 can fill the tank in 15 minutes
- Pipe 2 can fill the tank in 10 minutes
- Pipe 3 can empty the tank in 5 minutes

Approach:
- Find the rate at which each pipe fills or empties the tank
- Calculate the net rate at which the tank is being filled or emptied
- Determine the time taken to empty the tank

Calculations:
- Pipe 1 fills the tank at a rate of 1/15 tank/minute
- Pipe 2 fills the tank at a rate of 1/10 tank/minute
- Pipe 3 empties the tank at a rate of 1/5 tank/minute
- After 4 minutes, the tank will have been filled by (4/15 + 4/10) - 4/5 = 29/30 tank
- Combined rate after 4 minutes = 1/15 + 1/10 - 1/5 = 1/30 tank/minute
- Time taken to empty the remaining 1/30 tank = 1 / (1/30) = 30 minutes
Therefore, the tank will be emptied in 30 minutes. Since this option is not provided in the answer choices, the correct answer is option 'D' (Data inadequate).
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A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A third pipe can empty the tank in 5 minutes. The first two pipes are kept open for 4 minutes in the beginning and then the third pipe is also opened. In what time will the tank be emptied?a)3 minb)5 minc)2 mind)Data inadequatee)None of theseCorrect answer is option 'D'. Can you explain this answer?
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A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A third pipe can empty the tank in 5 minutes. The first two pipes are kept open for 4 minutes in the beginning and then the third pipe is also opened. In what time will the tank be emptied?a)3 minb)5 minc)2 mind)Data inadequatee)None of theseCorrect answer is option 'D'. Can you explain this answer? for Banking Exams 2025 is part of Banking Exams preparation. The Question and answers have been prepared according to the Banking Exams exam syllabus. Information about A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A third pipe can empty the tank in 5 minutes. The first two pipes are kept open for 4 minutes in the beginning and then the third pipe is also opened. In what time will the tank be emptied?a)3 minb)5 minc)2 mind)Data inadequatee)None of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Banking Exams 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A pipe can fill a tank in 15 minutes and another pipe in 10 minutes. A third pipe can empty the tank in 5 minutes. The first two pipes are kept open for 4 minutes in the beginning and then the third pipe is also opened. In what time will the tank be emptied?a)3 minb)5 minc)2 mind)Data inadequatee)None of theseCorrect answer is option 'D'. Can you explain this answer?.
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