Answer the following question, with explanation first.
The movie theater sells matinee tickets for $5, evening tickets for $12, and 3D tickets for $20. If they sell 200 matinee tickets, 300 evening tickets and 100 3D tickets, how much money do they make in total?

6600
First find the total revenue from the matinee tickets: $5 / ticket * 200 tickets = $1000.

Then find the total revenue from the evening tickets: $12 / ticket * 300 tickets = $3600.

Then find the total revenue from the 3D tickets: $20 / ticket * 100 tickets = $2000.

Then add the cost of each group of tickets to find the total cost: $1000 + $3600 + $2000 = $6600.

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So, the final answer is 6600