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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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