Question
Riordan folded 78 paper frogs in three days. Each day after the first day, he folded 4 less paper frogs than the day before. How many paper frogs did he fold on the first day?
3 m

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Riordan folded 78 paper frogs in three days. Each day after the first day, he folded 4 less paper frogs than the day before. How many paper frogs did he fold on the first day?