Mathematics, 08.02.2021 23:00 tatiaa2155

Kitty bought 20 books at a book fair. The mean cost of 15 of the books was $12. The total cost of the other 5 books was $40. Find the mean cost of the 20 books

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Kitty bought 20 books at a book fair. The mean cost of 15 of the books was $12. The total cost of th...

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