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Q: Pipe A can fill a tank in X hours. Pipe B can empty it in 15 hours. If both the pipers are opened together, then the tank will be filled in 7 hours and 30 minutes. Find the value of x?
  • A. 8
  • B. 5
  • C. 10
  • D. 9
Correct Answer: Option B -
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Explanations:

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