Question

A group of adults and kids went to see a movie. Tickets cost $7.00 each for adults and $4.50 each for kids, and the group paid $64.00 in total. There were 4 fewer adults than kids in the group. Find the number of adults and kids.
you know:
7a+4.5c = 64
a = c-4

now just solve for a and c.
Thank you, Steve. A = 4 and C = 8. I was initially having trouble setting up the equation properly.

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