- Let x represent the number of adult tickets that were sold.
- Let y represent the number of child tickets that were sold.
- The cost of an adult ticket is $12 and the cost of a child ticket is $5. The ball game sold $1,364 in tickets one Saturday. It means that:
12x + 5y = 1364
- The number of $12 adult tickets was 17 more than twice the number of $5 child tickets. It means that:
x = 17 + 2y
Then, substitute x in the first equation:
[tex]12(17+2y)+5y=1364[/tex]Simplify:
[tex]\begin{gathered} 204+24y+5y=1364 \\ 204+29y=1364 \end{gathered}[/tex]Solve for y:
[tex]\begin{gathered} 204+29y-204=1364-204 \\ 29y=1160 \\ \frac{29y}{29}=\frac{1160}{29} \\ y=40 \end{gathered}[/tex]Next, for x:
[tex]x=17+2(40)=17+80=97[/tex]Answer:
adult tickets = 97
child tickets = 40