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![①计算0.12345…495051÷0.515049…54321商保留三位小数②某工程甲、乙合作6天完成,乙丙合作8天完成,甲丙合作则需12天完成.问三人合作几天完成?三人单独做各需几天完工?③一个水池有甲乙丙三个](/uploads/image/z/12074629-13-9.jpg?t=%E2%91%A0%E8%AE%A1%E7%AE%970.12345%E2%80%A6495051%C3%B70.515049%E2%80%A654321%E5%95%86%E4%BF%9D%E7%95%99%E4%B8%89%E4%BD%8D%E5%B0%8F%E6%95%B0%E2%91%A1%E6%9F%90%E5%B7%A5%E7%A8%8B%E7%94%B2%E3%80%81%E4%B9%99%E5%90%88%E4%BD%9C6%E5%A4%A9%E5%AE%8C%E6%88%90%2C%E4%B9%99%E4%B8%99%E5%90%88%E4%BD%9C8%E5%A4%A9%E5%AE%8C%E6%88%90%2C%E7%94%B2%E4%B8%99%E5%90%88%E4%BD%9C%E5%88%99%E9%9C%8012%E5%A4%A9%E5%AE%8C%E6%88%90.%E9%97%AE%E4%B8%89%E4%BA%BA%E5%90%88%E4%BD%9C%E5%87%A0%E5%A4%A9%E5%AE%8C%E6%88%90%3F%E4%B8%89%E4%BA%BA%E5%8D%95%E7%8B%AC%E5%81%9A%E5%90%84%E9%9C%80%E5%87%A0%E5%A4%A9%E5%AE%8C%E5%B7%A5%3F%E2%91%A2%E4%B8%80%E4%B8%AA%E6%B0%B4%E6%B1%A0%E6%9C%89%E7%94%B2%E4%B9%99%E4%B8%99%E4%B8%89%E4%B8%AA)
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