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Mathematics, 16.07.2019 14:00 jakails7532

Alana and petra go to a used book sale, where every book is the same price. alana buys 5 books and petra buys 4 books. they run into their friend angus, who really loves to read, and discover that he has bought 19 books. angus received a $10.00 discount, but he still spent $7.50 more than alana and petra combined. how much does one book cost?

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Alana and petra go to a used book sale, where every book is the same price. alana buys 5 books and p...
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