- A5 L/min
- B25 L/min
- C30 L/min
- D4 L/min
Step-by-Step Solution
Inlet L/min; net L/min. Leak L/min. (25 is the net inflow.)
Answer: A) 5 L/min
A tank holding 600 litres fills in 20 minutes through its inlet, but because of a leak it actually takes 24 minutes. How many litres per minute does the leak drain?
Competition practicePipes & Cisterns
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Pipes & Cisterns practice questions
More Pipes & Cisterns practice
Two pipes fill a 3,000-litre tank in 10 and 15 hours, and the water board bills each…An inlet fills a tank in 5 hours. A leak that empties the full tank in 15 hours is…Pipe A fills a tank in 20 hours, and pipe B is 25% more efficient than A. They work…The rates of three pipes are in the ratio 2 : 3 : 5. Together they fill a tank in 6…A tank is 40% full. When 300 litres are pumped out, it becomes 25% full. A pipe…