3.3 Calculating RIs
In the next activity you will practise working out reference intake values.
Activity 4 Calculating daily intake
Allow approximately 10 minutes.
1) If a pack of sandwiches contains 7 g of fat, of which 6 g is saturated fat, what percentages of the total fat and the saturated fat are these for the day?
Remember that, to calculate the percentage, you need to divide the number of grams of fat in the sandwich by the RI value before multiplying the result by 100.
2) Consider the data in Table 3 for a chocolate and caramel snack bar.
Table 3 Nutrients and kilocalories in a 100 g snack bar
| Energy or nutrient | Reference intake |
|---|---|
| Calories | 448 kcal |
| Carbohydrate | 68.1 g |
| Protein | 4.2 g |
| Fat | 17.4 g |
| Fibre | 1.1 g |
- What is the most number of bars that a person could eat without exceeding the daily RI of 2000 calories (kcal)?
- How much fat would they consume if they ate those bars?
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