Question

Given the same intake (500 grams of carbohydrate, 30 grams of protein, and 75 grams of fat), what percentage of kilocalories is from carbohydrate?

a) 4%
b) 24%
c) 72%
d) 81%

Answer 1

The percentage of kilocalories from carbohydrate, when given an intake of 500 grams of carbohydrate, is approximately 72%, which is answer option (c).

Step-by-step explanation:

To determine the percentage of kilocalories from carbohydrate, we must first calculate the total kilocalories provided by the intake. Carbohydrates provide 4 kcal/g, proteins provide 4 kcal/g, and fats provide 9 kcal/g.

Given the intake:

• Carbohydrates: 500 grams x 4 kcal/g = 2000 kcal
• Protein: 30 grams x 4 kcal/g = 120 kcal
• Fat: 75 grams x 9 kcal/g = 675 kcal

The total kilocalories from all sources is:

2000 kcal (carbohydrates) + 120 kcal (protein) + 675 kcal (fat) = 2795 kcal

The percentage of kilocalories from carbohydrate is:

(2000 kcal / 2795 kcal) x 100 = 71.56%

The closest answer to this calculated value is (c) 72%