Final answer:
To find the percentage of energy from fats in a 1,200 kcal meal, we calculate the energy provided by each type of fat, sum it to get total fat energy, and then divide this by the total meal energy, multiplying by 100. The percentage of energy from lipids approximately equals 37.5%, with the closest answer being 35%.
Step-by-step explanation:
To calculate the percentage of energy supplied by the total lipid in a meal providing 1,200 kilocalories (kcal), we add up the calories provided by the saturated, monounsaturated, and polyunsaturated fats present in the meal. Since each gram of fat provides 9 kcal of energy, we can calculate the energy provided by each type of fat separately:
- 13 grams of saturated fats x 9 kcal/g = 117 kcal
- 10 grams of monounsaturated fats x 9 kcal/g = 90 kcal
- 27 grams of polyunsaturated fats x 9 kcal/g = 243 kcal
The total calories from fats = 117 + 90 + 243 = 450 kcal.
Next, to get the percentage of energy from total lipids, we divide the total calories from fats by the total calories of the meal and then multiply by 100:
(450 kcal / 1200 kcal) x 100 = 37.5%
Since none of the options given match exactly, we can assume that the closest correct answer to the question is 35%, option d.