The school that Kristen goes to is selling tickets to the annual dance competition. On the first day of ticket sales the school sold 3 adult
tickets and 6 child tickets for a total of $60. The school took in $44 on the
second day by selling 3 adult tickets and 4 child tickets. Find the price of
an adult ticket and the price of a child ticket. (Use a = adult and c = child).
Write your answer as (a. c).