Pipes & Cisterns · Question 18 · Easy
Pipes & Cisterns question 18
A 3,000-litre overhead tank in a Jaipur apartment is already 40% full. An inlet pipe adds 25 litres per minute. How many minutes will it take to fill the tank completely?
- 48 minutes
- 80 minutes
- 72 minutes
- 120 minutes
Answer and explanation
Answer: C. 72 minutes
Explanation: Water still needed = 60% of 3,000 = 1,800 litres. Time = 1,800 ÷ 25 = 72 minutes.
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