Math Snap

STEP 1

1. We are given the total calories per serving and the calories from fat per serving.
2. We need to find the percentage of total calories that come from fat.
3. If necessary, we will round the result to the nearest tenth of a percent.

STEP 2

1. Identify the relevant values.
2. Set up the formula for percentage.
3. Calculate the percentage.
4. Round the result if necessary.

STEP 3

Identify the total calories per serving and the calories from fat per serving.
- Total calories per serving: $120$
- Calories from fat per serving: $40$

STEP 4

Set up the formula to calculate the percentage of calories from fat.
$$\text{Percentage of calories from fat} = \left(\frac{\text{Calories from fat}}{\text{Total calories}}\right) \times 100$$

STEP 5

Substitute the identified values into the formula.
$$\text{Percentage of calories from fat} = \left(\frac{40}{120}\right) \times 100$$

STEP 6

Calculate the percentage.
$$\text{Percentage of calories from fat} = \left(\frac{40}{120}\right) \times 100 = \frac{1}{3} \times 100 \approx 33.3333$$

Round the result to the nearest tenth of a percent.
$$\text{Rounded percentage} = 33.3\%$$ The percentage of total calories that are from fat is:
$$\boxed{33.3\%}$$