Question
Liam folded 13 paper aeroplanes on the first day. Each day he did 10 more paper aeroplanes than the previous day. On the last day, he made 163 aeroplanes. How many days did he fold paper aeroplanes?
2 m

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Liam folded 13 paper aeroplanes on the first day. Each day he did 10 more paper aeroplanes than the previous day. On the last day, he made 163 aeroplanes. How many days did he fold paper aeroplanes?