The indoor climbing gym is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High
School A rented and filled 3 vans and 3 buses with 123 students. High School B rented and filled
6 vans and 4 buses with 188 students. Every van had the same number of students in it as did the
buses. How many students can a van carry? How many students can a bus carry?