One serving of grapefruit juice is 3/4 cup. Gemma has a pitcher with 3 1/4 cups of grapefruit juice.

How many servings of grapefruit juice are in the pitcher?
4 1/4
4 1/3
4 2/3
4 3/4

4 1/3

To find the number of servings in the pitcher, divide the total amount of grapefruit juice in the pitcher by the amount in one serving:
3 1/4 / 3/4 = 13/4 / 3/4 = 13/4 * 4/3 = 13/3 = 4 1/3

So, there are 4 1/3 servings of grapefruit juice in the pitcher.