Homework Help: math

Posted by bell on Monday, November 16, 2009 at 12:36pm.

Adult tickets for a play cost $19 and child tickets cost $17. If there were 36 people at a performance and the theatre collected $646 from ticket sales, how many children attended the play?

math - PsyDAG, Tuesday, November 17, 2009 at 12:06am
Let a = adults and c = children.

a + c = 36 total attendance, then
a = 36 - c

19a + 17c = $646 total ticket sales

Substitute (36-c) for a in the second equation and solve for c.

I'll let you do the calculations.

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