NSCF Certified Personal Trainer Practice Exam 2025 – All-in-One Guide to Achieve Certification Success!

To determine what percentage of carbohydrates in the nutrition bar comes from sugars, you need to calculate the ratio of sugar to total carbohydrates and then convert that ratio into a percentage.

In this case, the nutrition bar has 10 grams of sugar and 40 grams of total carbohydrates. To find the percentage of carbohydrates that are sugars, you use the formula:

\[

\text{Percentage of sugars} = \left( \frac{\text{grams of sugar}}{\text{total grams of carbohydrates}} \right) \times 100

\]

Substituting in the numbers:

\[

\text{Percentage of sugars} = \left( \frac{10 \text{ grams}}{40 \text{ grams}} \right) \times 100 = \left( 0.25 \right) \times 100 = 25\%

\]

This calculation shows that 25% of the carbohydrates in the bar are from sugars, making that answer correct.

The other options do not accurately represent this calculation. For instance, 20%, 30%, and 15% do not derive from dividing the amount of sugar by the total carbohydrates and thus do not reflect the correct portion that sugars contribute to the overall carbohydrate