Answer
Caloric content measures food energy. One kilocalorie raises one kilogram of water by by degree celsius. Carbohydrates and proteins have around 4 kcal per gram, and fats have 9 kcal per gram. Skim milk has 80 kcal per serving, and whole milk has 152 kcal per serving.
Work Step by Step
Skim: (12$\times$4) +(8$\times$4) = 80 kcal
Whole: (12$\times$4)+(8$\times$4)+(8$\times$9)= 152 kcal
