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26 November, 12:06

There are 16 books on a shelf. 7 of these books are new. (a) What is the ratio of new books to used books? (b) What is the ratio of all books to used books?

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  1. 26 November, 14:13
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    7 out of the 16 books are new, so 9 of them are used.

    7:9 is the ratio of new books to old books.

    16:9 is the ratio of all books to used books.
  2. 26 November, 14:29
    0
    The answers are

    a. 7:9

    b. 16:7
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