We can write an equation to show the amount of money earned based on the number of each ticket sold. Let's call the $5 tickets p and the $8 tickets c and the total sales S. Then we have:
[tex]5p+8c=S[/tex]
We need to have $1,200 of sales at least, and we know that there will be 0 $5 tickets sold, so we have to find c:
[tex]5(0)+8c=1200[/tex]
[tex]8c=1200[/tex]
[tex]c=150[/tex]
