Christopher's lunch contains 121 grams of carbohydrate, 40 grams of protein, and 25 grams of fat. Approximately what percent of kilocalories in this meal come from fat?

Question

Quizplus · Accepted Answer

Fat provides 9 kcal/gram, so 25 grams of fat provide 225 kcal. Carbohydrates and proteins provide 4 kcal/gram, so 121 grams of carbohydrates provide 484 kcal and 40 grams of protein provide 160 kcal. The total kcal is 869 (225+484+160). The percentage of kcal from fat is (225/869)*100 ≈ 26%.

Christopher's Lunch Contains 121 Grams of Carbohydrate, 40 Grams of Protein