某住宅小区计划购买并种植甲、乙两种树苗共300株.已知甲种树苗每株60元,乙种树苗每株90元(2)据统计,甲、乙两种树苗对空气的净化程度分别为0.2和0.6,问如何购买甲、乙两种树苗才能保证
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 22:43:18
![某住宅小区计划购买并种植甲、乙两种树苗共300株.已知甲种树苗每株60元,乙种树苗每株90元(2)据统计,甲、乙两种树苗对空气的净化程度分别为0.2和0.6,问如何购买甲、乙两种树苗才能保证](/uploads/image/z/3680894-38-4.jpg?t=%E6%9F%90%E4%BD%8F%E5%AE%85%E5%B0%8F%E5%8C%BA%E8%AE%A1%E5%88%92%E8%B4%AD%E4%B9%B0%E5%B9%B6%E7%A7%8D%E6%A4%8D%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%A7%8D%E6%A0%91%E8%8B%97%E5%85%B1300%E6%A0%AA.%E5%B7%B2%E7%9F%A5%E7%94%B2%E7%A7%8D%E6%A0%91%E8%8B%97%E6%AF%8F%E6%A0%AA60%E5%85%83%2C%E4%B9%99%E7%A7%8D%E6%A0%91%E8%8B%97%E6%AF%8F%E6%A0%AA90%E5%85%83%EF%BC%882%EF%BC%89%E6%8D%AE%E7%BB%9F%E8%AE%A1%2C%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%A7%8D%E6%A0%91%E8%8B%97%E5%AF%B9%E7%A9%BA%E6%B0%94%E7%9A%84%E5%87%80%E5%8C%96%E7%A8%8B%E5%BA%A6%E5%88%86%E5%88%AB%E4%B8%BA0.2%E5%92%8C0.6%2C%E9%97%AE%E5%A6%82%E4%BD%95%E8%B4%AD%E4%B9%B0%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%A7%8D%E6%A0%91%E8%8B%97%E6%89%8D%E8%83%BD%E4%BF%9D%E8%AF%81)
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