Question

if you have 8 grams of fats and 18 grams of carbohydrates, which one has more usable energy?
a. 18 grams of carbohydrates
b. 8 grams of fats
c. both have the same amount of energy

Explanation:

Step1: Recall energy - per - gram values

Carbohydrates provide about 4 kcal/g, and fats provide about 9 kcal/g.

Step2: Calculate energy from carbohydrates

Energy from 18 grams of carbohydrates = 18×4 kcal = 72 kcal.

Step3: Calculate energy from fats

Energy from 8 grams of fats = 8×9 kcal = 72 kcal.

Answer:

C. Both have the same amount of energy