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Q: Pipe A can fill a tank in 36 minutes and Pipe B can empty the same tank in 45 minutes. If both Pipes are opened simultaneously, then time (in hours) taken to fill half the capacity of tank is:
  • A. 2 hours
  • B. 1.5 hours
  • C. 1.25 hours
  • D. 1.75 hours
Correct Answer: Option B -
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Explanations:

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