Question
Xuan spent $64 on the pencils. If Xuan bought 8 pencils, she will get the 9th pencil free. 1 pencil cost $4. How many pencils did she buy?
4 m

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Xuan spent $64 on the pencils. If Xuan bought 8 pencils, she will get the 9th pencil free. 1 pencil cost $4. How many pencils did she buy?