A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is opened which admits 4 litres of water per minute in the tank , the leak takes 15 hours to empty the tank. How many litres of water does the tank hold?

• ক 4500 litters
• খ 7200 litters ✅ সঠিক উত্তর
• গ 1230 litters
• ঘ 2400 litters