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Mathematics, 28.05.2020 20:07 kat9940

Mrs. Prescott had 21 fiction book and 10 nonfiction books in her classroom library. After she bought some more non-fiction books, mrs. Mrs. Prescott found that one fifth of her library consisted of fiction books. How many non-fiction books did Mrs. Prescott buy?

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Mrs. Prescott had 21 fiction book and 10 nonfiction books in her classroom library. After she bought...
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