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Mathematics, 31.08.2019 16:30 joseenrique02

There are 11 books on a shelf. 3 of these books are new. (a) what is the ratio of used books to new books? (b) what is the ratio of used books to all books?

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There are 11 books on a shelf. 3 of these books are new. (a) what is the ratio of used books to new...
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