The box office at a theater sets the ticket price so that total ticket sales will be $7200 if tickets are sold for all 240 seats.By what amount should they increase ticket prices if they want to keep total ticket sales at $7200 but sell 15 fewer.
240 seats - 15 seats = 225 seats available now.
So the new price of the ticket = 7200/225 = 32
Therefore the increase in price is new price - old price = 32 -25 = 7
Answer: $ 7 increase in ticket price
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