A diet plan includes three foods with the following nutrient composition per 100 g:

- Food A: protein 8 g, carbohydrate 20 g, fat 5 g;
- Food B: protein 12 g, carbohydrate 30 g, fat 8 g;
- Food C: protein 5 g, carbohydrate 40 g, fat 10 g.

A person consumes 250 g of Food A and 150 g of Food B and an unknown amount $x$ (in grams) of Food C. The daily protein requirement is 50 g, which must be met exactly. (i) Determine the amount $x$ of Food C required. (ii) Using the caloric values protein 4 kcal g$^{-1}$, carbohydrate 4 kcal g$^{-1}$, fat 9 kcal g$^{-1}$, calculate the percentage of the total caloric intake that comes from fat, expressing your answer to one decimal place.

Question

A diet plan includes three foods with the following nutrient composition per 100 g:

- Food A: protein 8 g, carbohydrate 20 g, fat 5 g;
- Food B: protein 12 g, carbohydrate 30 g, fat 8 g;
- Food C: protein 5 g, carbohydrate 40 g, fat 10 g.

A person consumes 250 g of Food A and 150 g of Food B and an unknown amount $x$ (in grams) of Food C. The daily protein requirement is 50 g, which must be met exactly. (i) Determine the amount $x$ of Food C required. (ii) Using the caloric values protein 4 kcal g$^{-1}$, carbohydrate 4 kcal g$^{-1}$, fat 9 kcal g$^{-1}$, calculate the percentage of the total caloric intake that comes from fat, expressing your answer to one decimal place.

Accepted Answer

x = 240 g; fat provides 31.2 % of total calories

Neco Model Questions Vol1 2024 Biology Question 49

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