Question

The senior classes at High School A and High School B planned separate trips to New York City. The

Answer 1

van = v, bus = b, students = s

v + 6b = 372s ...eqn 1

4v + 12b = 780s ...eqn 2

divide eqn 2 by 4

v + 3b = 195s ...eqn 3

eqn 1 - eqn 3

3b = 177s

b = 59s

subst b = 59 in eqn 1

v + 354s = 372s

v = 18s

answer: each van holds 18 students and each bus holds 59 students