72% of calories are from carbohydrates.
Given: a daily allowance of 75 grams of fat, 30 grams of protein, and 500 grams of carbohydrates.
Multiply the grams of protein, carbohydrate, and fat by 4, 4, and 9 to determine the amount of energy provided by the food, correspondingly.
500 grams x 4 kcal/g = 2000 kcal
75 grams x 9 kcal/g = 675 kcal
30 grams x 4 kcal/g = 120 kcal
= 2795 kcal
With this information, you can figure out what proportion of the overall number of calories each energy nutrient contributes.
2000/2795 * 100% = 72% from carbohydrates
calories from proteins and fats can also be calculated:
675/2795 * 100% = 24% from fat
120/2795 * 100% = 4% from protein
learn more about carbohydrates here: https://brainly.com/question/20290845
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