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Mathematics, 02.12.2020 14:00 cordobamariana07

are are 11 books on a short 4 of these books are new. The rest of them are used. (a) What is the ratio of used books to all books on the shelf? () What is the ratio of used books to new books?

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are are 11 books on a short 4 of these books are new. The rest of them are used. (a) What is the rat...
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