Since the adult ticket cost is given, we can multiply that by the amount of adult tickets sold to get the portion of the total money made is adults only.
300 × 10 = $3000 in adult tickets sold
7200 - 3000 = $4200 in children tickets sold
Since we know there were 700 children tickets sold we can divide these amounts to get the cost of a children ticket.
$14 is for one main floor ticket and 500 were sold so you do 14x500 which is 7000 so we know that $900 is left so we do 900 divided by 6 cause it's $6 for a balcony seat and we would get 150 to check it we could do 150x6=900
