# math

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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 -

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

3300-3300 -5C = 2490 - 3300

-5C = -810

C = 162

A = 113

• math -

Excellent! Thank you Kuai!

• math -

You're welcome.

• math -

c 162
a 113

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