Question

pepperoni pizza
nutrition facts
serving size 1/8 of a pizza (87g)
servings per container 8
amount per serving
calories 270 calories from fat 80
total fat 9g 14%
saturated fat 4.5g 23%
trans fat 0g
polyunsaturated fat 1g
monounsaturated fat 1g
cholesterol 20mg 7%
sodium 390mg 16%
total carbohydrate 18g 6%
dietary fiber 1g 4%
sugars 1g
protein 10g
vitamin a 6% · vitamin c 0%
calcium 20% · iron 4%
*percent daily values are based on a 2,000 calorie diet.
calculation questions

1. how many calories would a person consume if they ate a half a pepperoni pizza?
2. how many calories would a person consume if they ate an entire pepperoni pizza?
3. how many calories are from fat in an entire pepperoni pizza?
4. if a person ate a half of a pepperoni pizza, what daily percentage of fat would they have consumed?
5. how much salt would a person consume if they ate three slices of pizza?

Explanation:

Step1: Determine calories per slice

The nutrition label shows that one serving (1/8 of a pizza) has 270 calories.

Step2: Calculate calories for half a pizza

Half a pizza is 4 slices (since there are 8 slices in a whole pizza). So, we multiply the calories per slice by 4.
$$270\times4 = 1080$$

Step3: Calculate calories for a whole pizza

A whole pizza has 8 slices. Multiply calories per slice by 8.
$$270\times8=2160$$

Step4: Calculate calories from fat for a whole pizza

One slice has 80 calories from fat. For 8 slices:
$$80\times8 = 640$$

Step5: Calculate fat percentage for half a pizza

One slice has 14% fat. Half a pizza (4 slices):
$$14\%\times4 = 56\%$$

Step6: Calculate salt for three slices

One slice has 390mg of sodium (salt). For three slices:
$$390\times3=1170\text{mg}$$

Answer:

1. 1080 calories
2. 2160 calories
3. 640 calories
4. 56%
5. 1170mg