Let X be the price of a child ticket.
So the price of an adult ticket is X*2.
We know from the problem that 400*X*2 + 200*X = 16,000.
After multiplying, we have 800*X+ 200*X = 16,000.
Combining like terms, we have 1000* X = 16,000.
Dividing both sides by 1000, we have X = $16.
The price of an adult ticket is $16 * 2 = $<<16*2=32>>32.
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