Mathematics, 18.07.2019 08:00, jackkie10

Last year the sales at a bookstore were 75% fiction books, and 25% nonfiction books. the average coss of a fiction book was $15. the average cost of a nonfiction book was $16. what was the averge costs of all fiction and non-fiction books sold at tthe bookstore last year? enter your answer as a decimal in the box

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Last year the sales at a bookstore were 75% fiction books, and 25% nonfiction books. the average cos...