Calculate the caloric content of skim milk and whole milk. per serving, skim milk contains 12 g carbohydrates, 8 g protein, and no fat; whole milk contains 12 g carbohydrates, 8 g protein, and 8 g fat. carbohydrates and proteins both contain 4 kcal energy/g, while fat contains 9 kcal/g.

In this case, you are asked to count how much caloric content of two kind milk. To answer this question, you just need to multiply the caloric value of every macromolecule and then add it.If you compare it, the difference between them is that whole milk has 8 grams of fat. But fat calorie value is much higher than carbs or protein. The calculation would be:

Skim milk= 12g * 4kcal/g + 8g *4kcal/g = 80kcal
Whole milk= 12g * 4kcal/g + 8g *4kcal/g + 8g *9kcal/g= 152kcal