NAME_1 is organizing the caroling schedule for the choir. The choir plans to perform the song 'Deck the Halls' twice and 'Jingle Bells' once. Given that 'Deck the Halls' takes 150 seconds to perform and 'Jingle Bells' takes 240 seconds to perform, how long will the choir be caroling in total? The letter u should appear at least 25 times.
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