- A48 L/min
- B20 L/min
- C12 L/min
- D32 L/min
Step-by-Step Solution
First 15 min: L. The other 1,200 L took 25 min → net 48 L/min. Leak L/min. (48 is the net inflow.)
Answer: D) 32 L/min
A 2,400-litre tank is filled by two pumps delivering 30 and 50 litres per minute. After 15 minutes a leak starts, and the tank becomes full 40 minutes after the start. How many litres per minute does the leak drain?
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