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Q: 2/5th part of tank A is filled with water. Pipe P can fill it in 10 minutes, while pipe Q can empty it in 6 minutes. If P and Q are opened together, then in how much time tank will be emptied?
  • A. 6 minute
  • B. 6.5 minute
  • C. 5.5 minute
  • D. 7 minute
Correct Answer: Option A -
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Explanations:

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