Can someone do this problem please? Thanks!

Question

For a field trip, the science class rented and filled eight vans and eight busses with 240 students. The math class rented and filled four vans and two busses with 68 students. Every van had the same number of students in it, as did the busses. Find the number of students in each van and in each bus.  

Answer 1

8V + 8B = 240

V + B = 30

4V + 2B = 68

2V + B = 34

V + B = 30

subtract to get

V = 4 students per van

B = 30-V = 26 students per bus