Solve
-Devon Purchased Tickets to an Air Show for 9 $\$ 228$

Solve.
-Devon purchased tickets to an air show for 9 adults and 2 children. The total cost was $\$ 228$ . The cost of a child's ticket was $\$ 7$ less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket.

A) adult's ticket: $\$ 23$ ; child's ticket: $\$ 16$
B) adult's ticket: $\$ 22$ ; child's ticket: $\$ 15$
C) adult's ticket: $\$ 21$ ; child's ticket: $\$ 14$
D) adult's ticket: $\$ 24$ ; child's ticket: \$17