Final answer:
To find the number of full bags Gina needs to purchase, divide the total weight of candy needed by the weight of each bag. Assuming Gina needs 16 pounds of candy, she would need to purchase 4 bags.
Step-by-step explanation:
To find the number of full bags Gina needs to purchase, we need to divide the total weight of candy needed by the weight of each bag. The question does not provide the total weight of candy needed, so we cannot determine the exact number of bags. However, let's assume that Gina needs 16 pounds of candy. Since each bag contains 4 pounds of candy, she would need to purchase 4 bags (16 pounds / 4 pounds per bag).