There are 15 books on a shelf. 9 of these books are new. (a) What is the ratio of new books to used books? (b) What is the ratio of used books to all books?

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asked Mar 13, 2018 106k views

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Gilfoyle · Answer 1 · 2018-03-16T02:34:22+0000

There are 15 books on a shelf. 9 of these books are new
so used books = 15 - 9 = 6

(a) What is the ratio of new books to used books
= 9:6
= 3:2

(b) What is the ratio of used books to all books?
= 6:15
= 2:5

There are 15 books on a shelf. 9 of these books are new. (a) What is the ratio of new books to used books? (b) What is the ratio of used books to all books?

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