I have a question about math .Help me!某城市平均每天产生垃圾700吨,由甲乙两厂处理,已知甲厂每小时可处理55吨,需要550元,乙厂每小时可处理垃圾45吨.需要用495元 如果该城市每天处理垃圾的费用是7300

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