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A used book store will trade 2 of its books for 3 of yours. If Val brings in 18 books to trade, how many books can she get from the store?
you need to set it up as a fraction and make the fractions equal each other. 2/3 (2 of their books for 3 of yours) x/18 (x amount of their books for 18 of yours) (2/3)=(x/18) multiply both sides by 18 and you get 36/3 which reduces to 12
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