A serving of a breakfast cereal contains 3 g of protien, 18 g of carbohydrats, and 6 g of fat. What is the calorie content of a serving of thi cereal if the average number of Calories for fat is 9.1 Calories/g. for carbohydrates is 4.1 calories/g, and for protien is 4.1 Calories/g?

The calorie content of a serving of this cereal is 140.7 cal.

Explanation:

We need to multiply the amount of calories per the amount of each nutrient.

Proteins: 3 g and 4.1 cal/g ∴ 3 x 4.1 = 12.3 cal

Carbohydrates: 18 g and 4.1 cal/g ∴ 18 x 4.1 = 73.8 cal

Fats: 6 g and 9.1 cal/g ∴ 6 x 9.1 = 54.6 cal

Now we just need to add the amounts:

Total calorie content = 12.3 + 73.8 + 54.6 = 140.7 cal