Posted by **ray** on Friday, May 31, 2013 at 10:56am.

Tickets to a show cost $10 for adults and $5 for children. The show was sold out, and the theatre has 500 seats. If the revenue collected from these ticket sales was $2900, how many adult tickets were sold?

- math -
**Steve**, Friday, May 31, 2013 at 11:31am
Add up the money collected for each kind of ticket. Since 500 were sold, if there were x adult tickets, then there were 500-x child tickets. So,

10x + 5(500-x) = 2900

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