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A tank has two inlets A and B and an outlet C. A and B together fill it in 4 hours, A and C together fill it in 12 hours, and B and C together fill it in 24 hours. How long would C alone take to empty the full tank?

Competition practicePipes & Cisterns
  • A16 h
  • B8 h
  • C24 h
  • D48 h

Step-by-Step Solution

. Adding the last two: , so → 16 h.
Answer: A) 16 h

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