There are 5 possible sandwiches to choose from. Additionally, we can choose one side out of the 3 options, and one beverage out of the 4 options. Since the number of possible sandwiches is related to the number of options we have, we can use the Fundamental Counting Principle.
Number of Number of Number of
Sandwiches Sides Beverages
5 * 3 * 4
Therefore, the number of possible combinations of a sandwich, side and beverage is the product of these three values.
5 * 3 * 4=60