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Q: Pipe A and B can fill the tank 10hrs and 15hrs respectively. Both can fill the tank together in__hrs.
  • A.
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  • B. 6 Hour /6 घण्टे
  • C. 5 Hour /5 घण्टे
  • D. 4 Hour /4 घण्टे
Correct Answer: Option B -
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Explanations:

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