1、一项工程,甲队独做12天可以完成.甲队先做了3天,再由乙队做2天,则能完成这项工程的1/2.现在甲、乙两队合做若干天后,再由乙队单独做.做完后发现两段所用时间相等.求两段一共用了几天?2
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![1、一项工程,甲队独做12天可以完成.甲队先做了3天,再由乙队做2天,则能完成这项工程的1/2.现在甲、乙两队合做若干天后,再由乙队单独做.做完后发现两段所用时间相等.求两段一共用了几天?2](/uploads/image/z/8851846-22-6.jpg?t=1%E3%80%81%E4%B8%80%E9%A1%B9%E5%B7%A5%E7%A8%8B%2C%E7%94%B2%E9%98%9F%E7%8B%AC%E5%81%9A12%E5%A4%A9%E5%8F%AF%E4%BB%A5%E5%AE%8C%E6%88%90.%E7%94%B2%E9%98%9F%E5%85%88%E5%81%9A%E4%BA%863%E5%A4%A9%2C%E5%86%8D%E7%94%B1%E4%B9%99%E9%98%9F%E5%81%9A2%E5%A4%A9%2C%E5%88%99%E8%83%BD%E5%AE%8C%E6%88%90%E8%BF%99%E9%A1%B9%E5%B7%A5%E7%A8%8B%E7%9A%841%2F2.%E7%8E%B0%E5%9C%A8%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E9%98%9F%E5%90%88%E5%81%9A%E8%8B%A5%E5%B9%B2%E5%A4%A9%E5%90%8E%2C%E5%86%8D%E7%94%B1%E4%B9%99%E9%98%9F%E5%8D%95%E7%8B%AC%E5%81%9A.%E5%81%9A%E5%AE%8C%E5%90%8E%E5%8F%91%E7%8E%B0%E4%B8%A4%E6%AE%B5%E6%89%80%E7%94%A8%E6%97%B6%E9%97%B4%E7%9B%B8%E7%AD%89.%E6%B1%82%E4%B8%A4%E6%AE%B5%E4%B8%80%E5%85%B1%E7%94%A8%E4%BA%86%E5%87%A0%E5%A4%A9%3F2)
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