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Q: A tank can be filled in 9 hours but due to a leakage, it takes 1 hour more. If tank is completely full, then due to leakage it will be empty in how much time?
  • A. 60 hours
  • B. 75 hours
  • C. 30 hours
  • D. 90 hours
Correct Answer: Option D -
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Explanations:

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