Let x = number of adult tickets
3x = number of student tickets (three times the number of adult tickets)
The sum of the tickets is 436 tickets.
The equation will be :
[tex]\begin{gathered} x+3x=436 \\ 4x=436 \\ x=\frac{436}{4} \\ x=109 \end{gathered}[/tex]ANSWER :
The number of adult tickets sold is 109 tickets