Question
A room contains three shelves: the 1st, 2nd, and 3rd. The number of books on the 1st and 2nd shelves are in the ratio of 6:11, while the number of books on the 1st and 3rd shelves are in the ratio of 2:3. If the total number of books across all three shelves is 208, determine how many books are on the 3rd shelf.
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