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Q: Tap A can fill a tank in 6 hours, tap B can fill the same tank in 8 hours and tap C can empty the same tank in 4 hours. If all three taps A, B and C are opened together, then how much time (in hours) will be taken to fill the tank?
  • A. 24
  • B. 20
  • C. 30
  • D. 28
Correct Answer: Option A -
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Explanations:

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