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inna [77]
3 years ago
10

Adult tickets to a playboy cost $22. Tickets for children cost $15. Tickets for a group of 11 people cost a total of $228. Write

and solve a system of equations to find how many children and how many adults were in the group.
Mathematics
1 answer:
Ainat [17]3 years ago
6 0
Let the number of adult be x and the number of children be y.

There is a total of 11 people
x + y = 11

Total cost of tickets is $228
22x + 15y = 228

x + y = 11 ----------------- (1)
22x + 15y = 228 ---------(2)

From (1):
x+ y = 11 
x = 11 - y --- sub into (2)
22 (11 - y) + 15y = 228
242 - 22y + 15y = 228
-7y = 228 - 242
-7y = -14
y = 2 ---- sub into (1)

x+ 2 = 11
x = 9

Number of adult tickets = 9
Number of child tickets = 2



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