If a serving of cookies contains 6 grams of fat, 19 grams of carbohydrates, 2 g of protein, how many Calories does one serving contain?

• A. 54 Calories.
• B. 138 Calories.
• C. 130 Calories.
• D. 202 Calories.

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the problem. The goal is to calculate the total Calories in one serving of cookies based on the macronutrient content provided: 6 grams of fat, 19 grams of carbohydrates, and 2 grams of protein.
2. Step 2: Recall the caloric values of macronutrients. Fat provides 9 Calories per gram, carbohydrates provide 4 Calories per gram, and protein provides 4 Calories per gram.
3. Step 3: Calculate the Calories contributed by fat using the formula: Calories from fat = grams of fat × 9. Use MathML: $\mathrm{Calories}=6\times 9$
4. Step 4: Calculate the Calories contributed by carbohydrates using the formula: Calories from carbohydrates = grams of carbohydrates × 4. Use MathML: $\mathrm{Calories}=19\times 4$
5. Step 5: Calculate the Calories contributed by protein using the formula: Calories from protein = grams of protein × 4. Use MathML: $\mathrm{Calories}=2\times 4$. Add the results from fat, carbohydrates, and protein to find the total Calories in one serving.