Many colleges offer on-campus meal plans that allow students to purchase a set number of meals per week; the meals are nonrefundable. Most students purchase a meal plan that allows students to eat 20 meals per week at oncampus dining locations. Toward the end of the week you notice most students eating off campus despite not using all of their on-campus meals. Use the concept of marginal utility to explain student’s behavior for spending money to eat off campus instead of consuming “free” on-campus meals.