The senior classes at high school a and high school b planned separate trips to yellowstone national park. the senior class at high school a rented and filled 13 vans and 13 buses with 468 students. high school b rented and filled 3 vans and 13 buses with 368 students. every van had the same number of students in it as did the buses. find the number of students in each van and in each bus. show your work.