
Lindsay J. answered 01/29/21
Friendly and Effective Tutor in English, Writing, Literature, ESL, SAT
Student tickets cost $5
Non-student tickets cost $15
Total cost = $115
Total people = 15
Number of student tickets = S
Number of non-student tickets = N
It is helpful to write out the information you know (see above). That way you can visualize what you already know and what you still need to find out.
Use equations like this:
$5 (S) + $15 (N) = $115
S + N = 15
Solve this system of equations by elimination or substitution.