Question 69084
a = number of adult tickets
c = number of child tickets
a + c = 23 or a = 23 - c
11a + 10c = 246
Plug:
11(23 - c) + 10c = 246
253 - 11c + 10c = 246
-c = -7
c = 7
a = 23 - 7 = 16
16 adult tickets and 7 child tickets