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Q:

Two pipes A and B can fill a tank in 24 min and 27 min respectively. If both the pipes are opened simultaneously, after how much time should B be closed so that the tank is full in 16 minutes?

  • 1
    8 min
  • 2
    10 min
  • 3
    12 min
  • 4
    9 min
  • 5
    14 min
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Answer : 4. "9 min "

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