# Math

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Devon purchased tickets to an air show for 9 adults and 2 children. The
total cost was \$252. The cost of a childʹs ticket was \$6 less than the cost of
an adultʹs ticket. Find the price of an adultʹs ticket and a childʹs ticket.

• Math -

A=cost of adult ticket
C=cost of child ticket

9A+2C = 252
A=C+6

Use substitution
9(C+6)+2C = 252
9C+2C = 252-54
11C = 198
C=18
A=C+6=24

Check:
9A+2C=9*24+2*18=216+36=252 OK

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