New York City is a popular field trip destination.this year the senior class high school a and high school b planned trips there.the senior class at high school a rented and filled 1van and 6 buses with 324. High school b rented and filled 9vans and 3 buses with 264 students.every van had the same number of students in it as the buses did. How many students can a van carry? How many students can a bus carry?