Question
Xavier folded 10 paper hearts on the first day. Each day he did 10 more paper hearts than the previous day. On the last day, he made 80 hearts. How many days did he fold paper hearts?
2 m

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Xavier folded 10 paper hearts on the first day. Each day he did 10 more paper hearts than the previous day. On the last day, he made 80 hearts. How many days did he fold paper hearts?