Question
The average number of cards Seth and Henry had was 109. The average number of cards Seth and Dylan was 65.5. Given that the ratio of the number of cards Henry had to the number of cards Dylan had was 5 : 2, find the number of cards Seth had.
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The average number of cards Seth and Henry had was 109. The average number of cards Seth and Dylan was 65.5. Given that the ratio of the number of cards Henry had to the number of cards Dylan had was 5 : 2, find the number of cards Seth had.