Answer :
Final answer:
To calculate the percentage of carbohydrates in different food items, divide the amount of carbohydrates by the total weight of the product and multiply by 100. The couscous contains 29% carbohydrates, the maize flour 78%, and the wheat flour 64%.
Explanation:
The question requires calculating the percentage of carbohydrates in different food items based on their given weights and carbohydrate contents.
- For the 400g pack of couscous with 116g of carbohydrates, the percentage of carbohydrates is calculated as: (116g / 400g) * 100 = 29%.
- For the 250g bag of maize flour with 195g of carbohydrates, the percentage of carbohydrates is: (195g / 250g) * 100 = 78%.
- For the 1kg (1000g) bag of wheat flour with 640g of carbohydrates, the percentage of carbohydrates is: (640g / 1000g) * 100 = 64%.
Thus, each food item has a different carbohydrate content, with maize flour having the highest percentage.