How many total calories are in a food that contains 5 g fat, 10 g protein, and 20 g carbohydrate?

To determine the total calories in the food based on its macronutrient content, you can use the caloric values assigned to each macronutrient: fat provides 9 calories per gram, protein provides 4 calories per gram, and carbohydrates provide 4 calories per gram.

For the given food:

• The fat content is 5 grams, which contributes: 5 g x 9 cal/g = 45 calories.

• The protein content is 10 grams, which contributes: 10 g x 4 cal/g = 40 calories.

• The carbohydrate content is 20 grams, which contributes: 20 g x 4 cal/g = 80 calories.

Now, adding these values together gives the total caloric content:

45 calories (from fat) + 40 calories (from protein) + 80 calories (from carbohydrates) = 165 calories.

This sum indicates that the food contains a total of 165 calories, which corresponds to the choice provided. Understanding how to calculate the caloric content from the individual macronutrients using their respective values is key for determining the total calorie count in food items.