Four friends bought books at a bookstore. The person who got the best deal has the lowest ratio of cost to number of books purchased.Book PurchasesNameTotal CostNumber of BooksJo$94Kei$128Kate$3016Bryn$84Who got the best deal?

Compare the cost per book for each person by dividing total cost by number of books. Jo: $9 ÷ 4 = $2.25 per book; Kei: $12 ÷ 8 = $1.50; Kate: $30 ÷ 16 = $1.875; Bryn: $8 ÷ 4 = $2. Kei has the lowest cost per book, so Kei got the best deal.

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