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A pipe fills one-third of a tank in 4 minutes. How much longer will it take to fill the rest?

Competition practicePipes & Cisterns
  • A4 min
  • B6 min
  • C8 min
  • D12 min

Step-by-Step Solution

Full tank takes min, so the remaining needs min. (12 min is the whole tank.)
Answer: C) 8 min

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