Malone Ramos
02/11/2023 · Senior High School
2. At a used book sale, 5 books cost \( \$ 15 \). a. What is the cost per book? b. At this rate, how many books can you buy for \( \$ 21 \) ?
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a. Cost per book is \( \$ 3 \).
b. You can buy 7 books for \( \$ 21 \).
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