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Pipe A alone fills a tank in 5 hours and pipe B alone in 8 hours. If both are opened together on the empty tank, in how much time will it be three-quarters full?

Competition practicePipes & Cisterns
  • A
  • B
  • C4.875 h
  • D2 h

Step-by-Step Solution

Together per hour. h h fills the whole tank.)
Answer: A)

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