Answer:
The energy intake from food is measured in Calories (Cal). It is to be distinguished from the calorie (with a small 'c'), which is also frequently used in technical publications. The Calorie is equal to 1 kilocalorie. The conversion formula between the Calorie and the Joule is:
1 Cal = 4184 Joules
Step-by-step explanation:
First let's find the total energy intake from the candy bar :
E = 2 × 1.2 10^6
J = 2.4 × 10^6 J.
And the total energy intake from the soft drink is :
E = 3 × 6.7 × 10^5
J = 2.01 × 10^6 J.
The total energy consumed is :
E = 2.01 × 10^6 + 2.4 × 10^6
J = 4.41 × 10^6 J.
The person is on a 2000 Cal diet. This converts to :
2000 × 4184
J = 8.368 × 10^6 J.
The amount of energy intake left for broccoli, beans, beef, etc is :
(8.368 - 4.41) × 10^6
J = 3.958 × J.
As a percentage of the total food intake, we can write this as :
3.958/8.368 × 100% = 47.3%
So now we got our final answer : 47.3%
