Determine the percentage of calories from carbohydrates, protein and fat in the following meal that consists of 150 grams of carbohydrate, 42 grams of protein and 30 grams of fat
The Correct Answer and Explanation is:
To determine the percentage of calories from carbohydrates, protein, and fat in the meal, we first need to calculate the total number of calories provided by each macronutrient. The general conversion factors for calories are as follows:
- Carbohydrates: 4 calories per gram
- Protein: 4 calories per gram
- Fat: 9 calories per gram
Step 1: Calculate Calories for Each Macronutrient
Calories from Carbohydrates: 150 grams×4 calories/gram=600 calories150 \, \text{grams} \times 4 \, \text{calories/gram} = 600 \, \text{calories}150grams×4calories/gram=600calories
Calories from Protein: 42 grams×4 calories/gram=168 calories42 \, \text{grams} \times 4 \, \text{calories/gram} = 168 \, \text{calories}42grams×4calories/gram=168calories
Calories from Fat: 30 grams×9 calories/gram=270 calories30 \, \text{grams} \times 9 \, \text{calories/gram} = 270 \, \text{calories}30grams×9calories/gram=270calories
Step 2: Calculate Total Calories in the Meal
Now, add the calories from each macronutrient: 600 calories+168 calories+270 calories=1038 calories600 \, \text{calories} + 168 \, \text{calories} + 270 \, \text{calories} = 1038 \, \text{calories}600calories+168calories+270calories=1038calories
Step 3: Calculate Percentage of Total Calories
To find the percentage of calories from each macronutrient, divide the calories from each by the total calories and multiply by 100.
Percentage of Calories from Carbohydrates: 6001038×100≈57.7%\frac{600}{1038} \times 100 \approx 57.7\%1038600×100≈57.7%
Percentage of Calories from Protein: 1681038×100≈16.2%\frac{168}{1038} \times 100 \approx 16.2\%1038168×100≈16.2%
Percentage of Calories from Fat: 2701038×100≈26.0%\frac{270}{1038} \times 100 \approx 26.0\%1038270×100≈26.0%
Final Answer:
- Carbohydrates: 57.7%
- Protein: 16.2%
- Fat: 26.0%
This meal has the majority of its calories from carbohydrates, with significant contributions from both protein and fat. The percentages show how the macronutrient distribution influences the overall energy content.
