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10 May, 17:43

andrews book collection contains 60 books. he donates 15% of his books yo the national library, sells 1/4 of his books to a book dealer, and sells 7 books on amazon. how many books remain on andrews book collection

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  1. 10 May, 20:35
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    Books remaining in Andrews book collection = 29 books

    Explanation:

    Andrews book collection contains 60 books.

    He donates 15% of his books to the national library,

    Number of books to library = 60 x 15/100 = 9

    Sells 1/4 of his books to a book dealer,

    Book sold to book dealer = 60 x 1/4 = 15

    Sells 7 books on amazon.

    Books remaining = 60 - (9 + 15 + 7)

    = 60 - 31

    = 29

    Books remaining in Andrews book collection = 29 books
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