Let C=Calories from Carbohydrates, P=Calories from Protein, F=Calories from Fat



We are given:

C = 4P

F = 2P

C+F+P = 2156



Substituting for C and F from the first two equations into the last equation:

4P + 2P + P = 2156

 7P = 2156 -->  P=308 Calories --> C=1232 Calories  and F=616 Calories



Calories from Carbohydrates = 1232





Note:  1 Calorie = 1000 calories = 1 kilocalorie  (when dealing with food, we are talking about kilocalories, or Calories with a capital C)





 

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