How many calories does a patient receive when eating a balanced snack including 3 grams of fat, 6 grams of protein, and 15 grams of carbohydrates?

Fat provides 9 calories per gram, while protein and carbohydrates each provide 4 calories per gram. The snack contains 3 × 9 = 27 calories from fat, 6 × 4 = 24 from protein, and 15 × 4 = 60 from carbohydrates, for a total of 111 calories. The correct choice is 111 calories.

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