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Mathematics, 04.07.2019 18:00 han6077

The ratio of the number of mystery books to the number of science fiction books is 4 : 3. the ratio of the number of science fiction books to the number of biographies is 4 : 5. if there are 48 science fiction books, find the total number of books.

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The ratio of the number of mystery books to the number of science fiction books is 4 : 3. the ratio...
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