There are 15 books on a shelf. 7 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?(b) What is the ratio of new books to used books?
Question
There are 15 books on a shelf. 7 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?(b) What is the ratio of new books to used books?
Solution
(a) The number of used books is 15 (total books) - 7 (new books) = 8 books. So, the ratio of used books to all books on the shelf is 8 (used books) : 15 (total books).
(b) The ratio of new books to used books is 7 (new books) : 8 (used books).
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