Final answer:
The formula to calculate the number of cars per person is Number of cars / Number of people.
Step-by-step explanation:
The formula to calculate the number of cars per person is 1) Number of cars / Number of people. This formula involves dividing the total number of cars by the total number of people. For example, if there are 100 cars and 200 people, the calculation would be 100 / 200 = 0.5 cars per person.