Question
Rael folded 70 paper planes in five days. Each day after the first day, he folded 3 more paper planes than the day before. How many paper planes did he fold on the first day?
3 m

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Rael folded 70 paper planes in five days. Each day after the first day, he folded 3 more paper planes than the day before. How many paper planes did he fold on the first day?