The local amusement park 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 1 van and 4 buses with 174 students. High School B rented and filled 13 vans and 13 buses with 663 students. Each van and each bus carried the same number of students. How many students can a van carry? How many students can a bus carry?