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A pipe fills a tank in 3 hours when it runs at full speed. It runs at full speed in the first hour, but in every later hour its rate is half that of the hour before. What happens to the empty tank?

Competition practicePipes & Cisterns
  • AIt never fills; the level approaches
  • BIt fills in 6 h
  • CIt fills in 5 h
  • DIt never fills; the level approaches

Step-by-Step Solution

Water added: . The level creeps towards but never reaches the top.
Answer: A) It never fills; the level approaches

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