How many calories should come from fats?

Question

A 1720 calorie diet should have a total of half the calories come from carbohydrates, 729 calories from protein and the rest from fats. How many calories come from fats?

Answer 1

Calories coming from carbs = 1/2 of 1720 = 860 calories

Calories coming from protein = 729 calories

Total calories coming from carbs + protein = 860 + 729 = 1589 calories

Remainder that should come from fats = 1720 - 1589 = 131 calories