In this question, all the required information's are already provided. Only thing that needs to be done is to compare the volume of the liquids and find the one that is greater. One container has 2.75 gallons of juice and the other container has 12 liter of juice.
Now we already know that
1 gallon = 3.785 litre
Then
2.75 gallon = (3.785 * 2.75) liters
= 10.41 liters
So the container having 12 liters of juice is greater.