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a librarian put 30 books back on the shelves before lunch. of the books, 10 were no...
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Mathematics, 13.01.2020 19:31, pamelaacuna
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a librarian put 30 books back on the shelves before lunch. of the books, 10 were non-fiction. what is the ratio of the number of non-fiction books to the total number of books the librarian put away before lunch?
a. 1 to 3
b. 1 to 2
c. 2 to 1
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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