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Q: Pipes A and B can fill a tank in 16 hours and 24 hours, respectively. Where as pipe C can empty the full tank in 40 hours. All three pipes are opened together, but pipe A is closed after 10 hours. After how many hours will the remaining part of the tank be filled?
  • A. 10
  • B. 20
  • C.
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  • D.
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Correct Answer: Option D -
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Explanations:

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