Give the step-by-step reasoning process and then the final answer. Ryan wants to take 5 peanut butter sandwiches to the beach. If each sandwich consists of 3 slices of bread how many slices does Ryan need to make 5 sandwiches?
To make 1 sandwich, you need 3 slices so Ryan needs 1 * 3 = 3 slices to make one sandwich. Since it takes 3 slices to make a sandwich, and Ryan wants 5 sandwiches to take to the beach he needs 3 * 5 = 15 slices.
The final answer: 15.