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Four taps of the same size fill a tank in 3 hours. How long would two such taps take?

Competition practicePipes & Cisterns
  • A1.5 h
  • B12 h
  • C5 h
  • D6 h

Step-by-Step Solution

Half as many taps need twice the time: h. (1.5 h halves the time instead.)
Answer: D) 6 h

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