Answer: Monty will get $4 in change.
Explanation:
First, let's calculate the cost of the tickets Monty purchased:
Cost of adult dinner tickets:
2 adult tickets at $22 each = 2 * $22 = $44
Cost of senior tickets:
2 senior tickets at $18 each = 2 * $18 = $36
Cost of child tickets:
3 child tickets at $12 each = 3 * $12 = $36
Total cost of all tickets = $44 (adult) + $36 (senior) + $36 (child) = $116
Now, let's calculate the change Monty will get from $120:
Change = $120 (amount given) - $116 (total cost of tickets)
= $4
Monty will get $4 in change.