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A snack contains 200 calories, with 10 grams of protein, 20 grams of carbohydrat

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Question: A snack contains 200 calories, with 10 grams of protein, 20 grams of carbohydrates, and 5 grams of fat. What percentage of the total calories comes from protein? (2019)

Options:

  1. 10%
  2. 20%
  3. 25%
  4. 30%

Correct Answer: 20%

Exam Year: 2019

Solution: 

Calories from protein = 10g * 4 = 40 calories. Percentage = (40/200) * 100 = 20%.

A snack contains 200 calories, with 10 grams of protein, 20 grams of carbohydrat

Practice Questions

Q1
A snack contains 200 calories, with 10 grams of protein, 20 grams of carbohydrates, and 5 grams of fat. What percentage of the total calories comes from protein? (2019)
  1. 10%
  2. 20%
  3. 25%
  4. 30%

Questions & Step-by-Step Solutions

A snack contains 200 calories, with 10 grams of protein, 20 grams of carbohydrates, and 5 grams of fat. What percentage of the total calories comes from protein? (2019)
  • Step 1: Understand that each gram of protein provides 4 calories.
  • Step 2: Calculate the calories from protein by multiplying the grams of protein (10g) by 4 calories per gram: 10g * 4 = 40 calories.
  • Step 3: Find the total calories in the snack, which is given as 200 calories.
  • Step 4: Calculate the percentage of calories from protein by dividing the calories from protein (40 calories) by the total calories (200 calories): 40 / 200.
  • Step 5: Multiply the result from Step 4 by 100 to convert it to a percentage: (40 / 200) * 100 = 20%.
  • Caloric Contribution of Macronutrients – Understanding how to calculate the caloric contribution of protein, carbohydrates, and fats based on their gram amounts and respective caloric values (4 calories per gram for protein and carbohydrates, 9 calories per gram for fat).
  • Percentage Calculation – Calculating the percentage of total calories that come from a specific macronutrient.
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