Mathematics, 01.03.2021 23:30 tyrique86

Christopher spent a total of $52.50 at a bookstore. He purchased a calendar for $9 and three books that cost the same amount. Which of the following equations could be used to find b, the amount of each book he purchased?

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Christopher spent a total of $52.50 at a bookstore. He purchased a calendar for $9 and three books t...