Question
Ferry S and Ferry T had a total of 123 passengers. When 21 passengers from Ferry S moved to Ferry T, Ferry S had 2 times as many passengers as Ferry T. How many passengers were there in Ferry S at first?
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Ferry S and Ferry T had a total of 123 passengers. When 21 passengers from Ferry S moved to Ferry T, Ferry S had 2 times as many passengers as Ferry T. How many passengers were there in Ferry S at first?