yellowstone national 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 here. the senior class at high school A rneted and filled 1 van and 10 buses with 583 students. high school B rented and filled 12 vans and buses with 840 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?