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A quarter-pound fast-food hamburger sandwich provides 500 calories and contains 15 grams of fat. What is the percentage of calories from fat? 15% 27% 25% 45% 3%

Question

A quarter-pound fast-food hamburger sandwich provides 500 calories and contains 15 grams of fat. What is the percentage of calories from fat? 15% 27% 25% 45% 3%

A quarter-pound fast-food hamburger sandwich provides 500 calories and contains 15 grams of fat. What is the percentage of calories from fat? 15% 27% 25% 45% 3%

Solution

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ShawProfessional · Tutor for 6 years

Answer

<p> B</p>

Explain

<p> To find the percentage of calories from fat in the hamburger sandwich, we need to follow a series of steps. <br /><br />1. **Identify the Total Calories and Fat Grams**: From the question, we know that the hamburger sandwich provides 500 calories and contains 15 grams of fat.<br /><br />2. **Convert Fat Grams to Calories**: Dietary fat provides 9 calories per gram. So, to find the calories from fat, we use the formula:<br />\[ \text{Calories from Fat} = \text{Fat Grams} \times 9 \text{ cal/g} \]<br />Substitute the given value of fat grams (15 g) into the formula:<br />\[ \text{Calories from Fat} = 15 \text{ g} \times 9 \text{ cal/g} = 135 \text{ cal} \]<br /><br />3. **Calculate the Percentage of Calories from Fat**: To find the percentage of calories from fat, we use the formula:<br />\[ \text{Percentage of Calories from Fat} = \left( \frac{\text{Calories from Fat}}{\text{Total Calories}} \right) \times 100\% \]<br />Substitute the calculated calories from fat (135 cal) and the given total calories (500 cal) into the formula:<br />\[ \text{Percentage of Calories from Fat} = \left( \frac{135 \text{ cal}}{500 \text{ cal}} \right) \times 100\% \approx 27\% \]<br /><br />So, the percentage of calories from fat in the hamburger sandwich is approximately 27%, which corresponds to option B.</p>
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