A meal contains 30 grams of carbohydrate, 10 grams of fat, and 5 grams of protein. How many calories did the meal provide

230 Calories

Explanation:

Carbohydrates are the primary source of energy in our body and 4 Calories of energy is provided by each gram of carbohydrates. So 30 gram of carbohydrates will produce;

                              30 x 4= 120 Calories

Proteins also provide 4 Calories/gram.

                               5 x 4 = 20 Calories

Fats provide more energy than carbohydrates and proteins and 9 Calories of energy is provided by each gram of fat.

                               10 x 9 = 90 Calories

Totall energy produced by 30 grams of carbohydrates, 5 gram of proteins and 9 gram of carboydrates;

                         120 + 20 + 90 = 230 Calories