Given:
Total number of tickets = 353
Single ticket = $92
Family ticket = $122
Total sales = $39946
To find:
The number of family tickets.
Solution:
Let x be the number of single tickets and y be the number of family tickets.
Total tickets:
...(i)
Total sales:
...(ii)
Multiply (i) by 92 and subtract the result from (ii).



Divide both sides by 30.


Therefore, the number of family tickets is 249.