Answer :
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So we know that 10* 500 = 5000
And what we know (in estimates) is that about 800 extra people came in after the tickets were dropped to $8
We know this because it takes 16/2s to get to 8, and 16*50 = 800
And that 8 * 800 = 8,000
So 6,400 - 5,000 = 1,400
So we know that the theater made $1,400 extra after dropping the tickets to $8...