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Mathematics, 21.09.2020 04:01 nae878

Mr. Sanchez bought some books at a book sale, including 15 paper books. 75% of all the books of all the books were paperbacks. How many books did Mr. Sanchez buy in all

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Mr. Sanchez bought some books at a book sale, including 15 paper books. 75% of all the books of all...
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