the approximate energy yield of carbohydrates is 4 calories/gram; fats yield about 9 calories/gram, and proteins about 4 calories/gram. Jack and Sarah consumed the following for lunch: Jack-100 grams protein, 20 grams fat, 75 grams carbohydrates; Sarah - 75 grams protein, 10 grams fats, 75 grams carbohydrates. How many Calories each did Jack and Sarah consume

Calories consume by Sarah 690 cal.

Calories consume by jack 880 cal.

Explanation:

For jack

Mass of carbohydrate = 75 g

Mass of protein = 100 g

Mass of fats = 20 g

For Sarah,

Mass of carbohydrate = 75 g

Mass of protein = 75 g

Mass of fats = 10 g

Solution:

The average calories content of

Protein 4 cal/g

Carbohydrate 4 cal/g

Fat 9 cal/g

Then,

First of all we will calculate the calories consume by jack.

100 g protein * 4 cal/g = 400 cal

20 g fat * 9 cal/g = 180 cal

75 g carb. * 4 cal/g = 300 cal

Total calories = 880 cal

Calories consume by Sarah.

75 g protein * 4 cal/g = 300 cal

10 g fat * 9 cal/g = 90 cal

75 g carb. * 4 cal/g = 300 cal

Total calories = 690 cal