一个书架有三层,上层放书本书和中层的比是4:5,中层和下层的比是3:4,已知三层共有书470本.一个书架有三层,上层放书本书和中层的比是4:5,中层和下层的比是3:4,已知三层共有书470本.三层
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 21:54:25
![一个书架有三层,上层放书本书和中层的比是4:5,中层和下层的比是3:4,已知三层共有书470本.一个书架有三层,上层放书本书和中层的比是4:5,中层和下层的比是3:4,已知三层共有书470本.三层](/uploads/image/z/2426135-23-5.jpg?t=%E4%B8%80%E4%B8%AA%E4%B9%A6%E6%9E%B6%E6%9C%89%E4%B8%89%E5%B1%82%2C%E4%B8%8A%E5%B1%82%E6%94%BE%E4%B9%A6%E6%9C%AC%E4%B9%A6%E5%92%8C%E4%B8%AD%E5%B1%82%E7%9A%84%E6%AF%94%E6%98%AF4%EF%BC%9A5%2C%E4%B8%AD%E5%B1%82%E5%92%8C%E4%B8%8B%E5%B1%82%E7%9A%84%E6%AF%94%E6%98%AF3%EF%BC%9A4%2C%E5%B7%B2%E7%9F%A5%E4%B8%89%E5%B1%82%E5%85%B1%E6%9C%89%E4%B9%A6470%E6%9C%AC.%E4%B8%80%E4%B8%AA%E4%B9%A6%E6%9E%B6%E6%9C%89%E4%B8%89%E5%B1%82%2C%E4%B8%8A%E5%B1%82%E6%94%BE%E4%B9%A6%E6%9C%AC%E4%B9%A6%E5%92%8C%E4%B8%AD%E5%B1%82%E7%9A%84%E6%AF%94%E6%98%AF4%3A5%2C%E4%B8%AD%E5%B1%82%E5%92%8C%E4%B8%8B%E5%B1%82%E7%9A%84%E6%AF%94%E6%98%AF3%EF%BC%9A4%2C%E5%B7%B2%E7%9F%A5%E4%B8%89%E5%B1%82%E5%85%B1%E6%9C%89%E4%B9%A6470%E6%9C%AC.%E4%B8%89%E5%B1%82)
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