math
posted by Monica .
Children's tickets to a movie cost $7. Adult tickets cost $12. If 275 tickets were sold for a total of $2490.00, how many of each type were sold?

math 
Kuai
Let adult A and children C
A + C = 275
12A + 7C = 2490
Substituting
A = 275 C
12(275 C) + 7C = 2490
3300 12C + 7C = 2490
3300 5C = 2490
33003300 5C = 2490  3300
5C = 810
C = 162
A = 113 
math 
Monica
Excellent! Thank you Kuai!

math 
Kuai
You're welcome.

math 
tierra perkins
c 162
a 113
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