If a water tank can hold 1000 liters of water and 1/4 of the tank is already filled, how many more liters can be added to the tank?
Correct: A
If 1/4 of the tank is already filled, then 1/4 * 1000 = 250 liters are already in the tank. To find the amount of water that can still be added, we subtract the amount already in the tank from the total capacity: 1000 - 250 = 750 liters.