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Ramesh switches on a motor that fills his 1,000-litre rooftop tank in 25 minutes. How many litres are in the tank after 10 minutes, if it was empty?

Competition practicePipes & Cisterns
  • A100 L
  • B400 L
  • C600 L
  • D250 L

Step-by-Step Solution

Rate L/min; in 10 min L. (600 L is the space still empty.)
Answer: B) 400 L

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