Final answer:
To calculate total carbs and nutritional values for two servings, multiply the nutritional values by two. The Atwater system is used on food labels to calculate caloric content of food from protein, carbohydrate, and fat.
Step-by-step explanation:
To calculate total carbohydrates and nutritional values for two servings based on the serving size on the label, you should follow option B) Multiply nutritional values by two for two servings. For example, if one serving provides 250 calories and includes 5 grams of total fat, and you have two servings, you would double these amounts, resulting in 500 calories and 10 grams of total fat consumed.
The Atwater system is commonly used on food labels to calculate the caloric content of food, taking into account the average calories per gram for proteins, carbohydrates, and fats.
To determine the energy content of a food, the quantities of carbohydrate, protein, and fat are multiplied by the average calories per gram for each.
For example, if one serving had 5 grams of protein (4 calories/gram), 31 grams of carbohydrates (4 calories/gram), and 12 grams of fat (9 calories/gram), the total energy for that serving would be:
(5 g protein x 4 Calories/g) + (31 g carb × 4 Calories/g) + (12 g fat × 9 Calories/g) = 252 Calories
So for two servings, this number would be doubled: 252 Calories x 2 = 504 Calories from two servings.