51问答网 > 5分硬币和2分硬币共100枚，总金额3.8元，5分硬币有______枚，2分硬币有___

5分硬币和2分硬币共100枚，总金额3.8元，5分硬币有______枚，2分硬币有___

2025-04-06 11:35:44
推荐回答（1个）
回答1：

3.8元=380分，
设五分的硬币有x枚，则二分的硬币有（100-x）枚，根据题意可得方程：
5x+2（100-x）=380，
    5x+200-2x=380，
       3x+200=380，
           3x=180，
            x=60，
则二分的硬币有：100-60=40（枚），
答：这五分硬币60枚，二分硬币40枚．
故答案为：60；40．

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