Mathematics
Mathematics, 09.07.2019 01:30, klk597703

In a bookcase, there are 4 fiction books for every 9 nonfiction books. there are 78 books in the bookcase. how many fiction books are in the bookcase?

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In a bookcase, there are 4 fiction books for every 9 nonfiction books. there are 78 books in the boo...

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