A roasted chicken multigrain sandwich contains 42 g protein, 7 g fat, and 34 g carbohydrates. How much energy does the sandwich provide?

Proteins provide 4 calories of energy per gram, fats 9 calories, while carbohydrates 4 calories. A roasted chicken multigrain sandwich which contains 42 g protein, 7 g fat, and 34 g carbohydrates will provide a total energy (E) computed as follows:

Let E = 42 (4) + 7 (9) + 34 (4)

E=168+63+136

E=367 calories of energy