Solve the problem.Devon purchased tickets to an air show for 8 adults and 2 children. The total cost was 
. The cost of a child's ticket was 
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: $11; child's ticket: $4
B. adult's ticket: $14; child's ticket: $7
C. adult's ticket: $13; child's ticket: $6
D. adult's ticket: $12; child's ticket: $5
Answer: D
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