Answer:
$10 for child tickets and $4 for adult tickets.
Explanation:
Let a = price of adult tickets
c = price of child tickets
(1) 12a + 6c = 108 (2) 2a + 12c = 128 Multiply (2) by -6
-12a - 72c = -768
-66c = -660
c = $10 2a + 12(10) = 128
2a + 120 = 128
2a = 8
a = $4
Something is wrong. The adult tickets should be more than the child tickets.
But, according to the info you have given, it comes out to $10 for child tickets and $4 for adult tickets.