A, B, and C go to the same movie. If A buys three movie tickets with the money brought by A, there is still a difference of 39 yuan; The money brought by A, B, and C to buy three movie tickets is 26 yuan more. It is known that C brought 25 yuan. May I ask: How much is a movie ticket?
甲、乙、丙三人去看同一部电影，如用甲带的钱买三张电影票，还差39元；如果用乙带的钱去买三张电影票，还差50元；如果用甲、乙、丙三个人带去的钱买三张电影票，就多26元，已知丙带了25元钱，请问：一张电影票多少元？
<gadget id="calculator">26 - 25</gadget>
<output>1</output>

<gadget id="calculator">39 + 1 + 50</gadget>
<output>90</output>

<gadget id="calculator">90 / 3</gadget>
<output>30</output>

<result>30</result>