Jane consumed for breakfast 85 grams of carbohydrates, 20 grams of proteins and 18 grams of fats. How many Kilocalories did Jane consume at breakfast?

582

Explanation:

Jane consumed 85 grams of carbohydrates

He would obtain 85 x 4 = 340 kcal from carbohydrates since 4 kcal are obtained when one gram of carbohydrates are digested.

He consumed 20 grams of proteins which means that he would obtain 20 x 4 = 80 kcal from it. One gram of proteins also obtains 4 kcal.

The total energy obtained by consumption of 18 grams of fats = 18 x 9 = 162 kcal since 9 kcal are obtained by 1 gram of fats.

Therefore, total kcalories obtained by breakfast = 340 + 80 + 162 = 582 kilocalories