Question
Risa spent 4 days making paper cranes for her brothers. Each day, she managed to make 4 more paper cranes than the day before. She made a total of 64 paper cranes. How many paper cranes did she make on the first day?
2 m

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Risa spent 4 days making paper cranes for her brothers. Each day, she managed to make 4 more paper cranes than the day before. She made a total of 64 paper cranes. How many paper cranes did she make on the first day?