A Banana Has 27 Grams Of Carbohydrates. It Has A Total Of 121 Calories. How Many Of Its Calories Come From Sources Other Than Carbohydrates?

How many calories in a gram?

To determine how many of a banana's calories come from sources other than carbohydrates, we need to know the number of calories per gram of carbohydrates.

Carbohydrates provide about 4 calories per gram. Since a banana has 27 grams of carbohydrates, we can calculate the number of calories from carbohydrates:

Calories from carbohydrates = 27 grams * 4 calories per gram = 108 calories

Since the total number of calories in a banana is 121, we can subtract the calories from carbohydrates to find the calories from other sources:

Calories from other sources = Total calories - Calories from carbohydrates
Calories from other sources = 121 calories - 108 calories
Calories from other sources = 13 calories

Therefore, 13 out of the total 121 calories in a banana come from sources other than carbohydrates.