There are 7.4 billion people in the world. If the whole world were represented by a 30-person class:

- 14 people would eat rice as their main food.
- 12 people would be under the age of 20.
- 5 people would be from Africa.
1. How many people in the class would not eat rice as their main food?


2. What percentage of the people in the class would be under the age of 20?