Math
posted by Anonymous on .
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.

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 = 25254
11C = 198
C=18
A=C+6=24
Check:
9A+2C=9*24+2*18=216+36=252 OK