To find out how many students were on each bus, we can follow these steps:
- Start with the total number of students: 300.
- Subtract the number of students who rode in cars: 300 - 12 = 288 students who rode the buses.
- There are 6 buses, so we divide the number of students by the number of buses: 288 รท 6 = 48.
Therefore, there were 48 students on each bus.