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Decimal part and percentage part of sales

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A bookstore sells a total $4500 worth of math books, $3000 worth of science books, and $1200 worth of history books. the book store also sells several other types of books. the total sales are $11,000.

a. find the decimal part of sales for each type of books. (math, science, and history)

b. find the percentage of sales for each type of book (math, science, and history)

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A bookstore sells a total $4500 worth of math books, $3000 worth of science books, and $1200 worth of history books. the book store also sells several other types of books. the total sales are $11,000.

a. find the decimal part of sales for each type of books. ...

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