Kgomotso's doctor tells him that he shouldn't eat more than 10 g of salt per day. His lunch consists of the following foods: 250 g fried fish with a salt concentration of 50 mg per 100 g 400 g potato crisps with a salt concentration of 1 g per 100 g 2 tablespoons of tomato sauce with a salt concentration of \( 0,5 \mathrm{~g} \) per tablespoon

To determine if Kgomotso's lunch exceeds the recommended salt intake of 10 g, we need to calculate the total amount of salt in each food item and then sum them up. ### Step 1: Calculate the salt content in each food item 1. **Fried Fish:** - Weight: 250 g - Salt concentration: 50 mg per 100 g - Salt in fried fish = \(\frac{50 \text{ mg}}{100 \text{ g}} \times 250 \text{ g}\) 2. **Potato Crisps:** - Weight: 400 g - Salt concentration: 1 g per 100 g - Salt in potato crisps = \(\frac{1 \text{ g}}{100 \text{ g}} \times 400 \text{ g}\) 3. **Tomato Sauce:** - Amount: 2 tablespoons - Salt concentration: 0.5 g per tablespoon - Salt in tomato sauce = \(2 \text{ tablespoons} \times 0.5 \text{ g/tablespoon}\) ### Step 2: Perform the calculations Let's calculate the salt content for each food item step by step. 1. **Fried Fish:** \[ \text{Salt in fried fish} = \frac{50 \text{ mg}}{100 \text{ g}} \times 250 \text{ g} = 125 \text{ mg} \] 2. **Potato Crisps:** \[ \text{Salt in potato crisps} = \frac{1 \text{ g}}{100 \text{ g}} \times 400 \text{ g} = 4 \text{ g} \] 3. **Tomato Sauce:** \[ \text{Salt in tomato sauce} = 2 \text{ tablespoons} \times 0.5 \text{ g/tablespoon} = 1 \text{ g} \] ### Step 3: Convert all salt amounts to grams - Salt in fried fish: \(125 \text{ mg} = 0.125 \text{ g}\) - Salt in potato crisps: \(4 \text{ g}\) - Salt in tomato sauce: \(1 \text{ g}\) ### Step 4: Sum the total salt content Now, we can sum the salt content from all food items: \[ \text{Total salt} = 0.125 \text{ g} + 4 \text{ g} + 1 \text{ g} \] ### Step 5: Calculate the total salt Let's perform the final calculation: \[ \text{Total salt} = 0.125 + 4 + 1 = 5.125 \text{ g} \] ### Conclusion Kgomotso's total salt intake from lunch is \(5.125 \text{ g}\), which is below the recommended limit of \(10 \text{ g}\) per day. Therefore, he is within the safe limit for salt consumption for that meal.