Answer:
ticket for adults is 12,5$
ticket for students is 8,5$
Explanation:
A is for adult tickets
S is for student tickets
4A + 2S = 67 /×3
3A + 3S = 63 /×(-2)
⇒ We multiply this
12A + 6S = 201
-6A - 6S = -126
⇒ Addition of both
6A = 75
A = 12,5$
and from 4A + 2S = 67 we have that S is 8,5$