Question

It is known that one gram of carbohydrate and one gram of protein each gives us about 4 dietary calories. Fat is much more calorically dense and gives us 9 dietary calories for each gram. If we assume each meal consists of 50% carbohydrates, 30% proteins and 20% fats, how many dietary calories do we consume in each gram?

6 dietary calories

4 dietary calories

3 dietary calories

5 dietary calories

Answer 1

Given that

in 1 gram carbohydrate = 4 dietry calories

in 1 gram protein = 4 dietry calories

in 1 gram fat = 9 dietry calories

Now In each meal there is 50% Carbohydrates,

Dietry calories in 50% carbohydrates = 4*50/100 = 2 dietry calories

Now In each meal there is 30% proteins,

Dietry calories in 30% protein = 4*30/100 = 1.2 dietry calories

Now In each meal there is 20% fat,

Dietry calories in 20% fat = 9*20/100 = 1.8 dietry calories

Total dietry calories = 2 + 1.2 + 1.8 = 5 dietry calories

Correct option is D.

Please Upvote.