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11 June, 22:10

In 2002, the Bookstore sold 1000 paperback books and 1500 hardback books. In 2003, the store sold 15% more paperback books and 5% more hardback books than sold in 2002. By what percent did the total number of books sold by the store increase from 2002 to 2003?. A. 20% / B. 60%. / C. 9% / D. 15%

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  1. 11 June, 23:01
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    Given:

    2002 sold 1000 paperback books and 1500 hardback books for a total of 2,500 books.

    2003 sold 15% more paperback books and 5% more hardback books.

    1000 x 1.15 = 1,150 paperbacks

    1500 x 1.05 = 1,575 hardbacks

    1150 + 1575 = 2,725

    2,725 - 2,500 = 225

    225 / 2,500 = 0.09

    0.09 x 100% = 9% choice C
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