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Q: Two pipes A and B can fill a tank in 18 minutes and 24 minutes respectively. If both the pipes are opened simultaneously, then after how much time should pipe B be closed so that the tank is full in 12 minutes?
  • A. 6 minutes
  • B. 9 minutes
  • C. 5 minutes
  • D. 8 minutes
Correct Answer: Option D -
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Explanations:

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