食堂里有94千克面粉和138千克大米,每天用掉面粉和大米各9千克,几天后剩下的大米是面粉的3倍?(138-94)÷2=22千克(94-22)÷9=8天
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![食堂里有94千克面粉和138千克大米,每天用掉面粉和大米各9千克,几天后剩下的大米是面粉的3倍?(138-94)÷2=22千克(94-22)÷9=8天](/uploads/image/z/72017-17-7.jpg?t=%E9%A3%9F%E5%A0%82%E9%87%8C%E6%9C%8994%E5%8D%83%E5%85%8B%E9%9D%A2%E7%B2%89%E5%92%8C138%E5%8D%83%E5%85%8B%E5%A4%A7%E7%B1%B3%2C%E6%AF%8F%E5%A4%A9%E7%94%A8%E6%8E%89%E9%9D%A2%E7%B2%89%E5%92%8C%E5%A4%A7%E7%B1%B3%E5%90%849%E5%8D%83%E5%85%8B%2C%E5%87%A0%E5%A4%A9%E5%90%8E%E5%89%A9%E4%B8%8B%E7%9A%84%E5%A4%A7%E7%B1%B3%E6%98%AF%E9%9D%A2%E7%B2%89%E7%9A%843%E5%80%8D%3F%28138-94%29%C3%B72%3D22%E5%8D%83%E5%85%8B%2894-22%29%C3%B79%3D8%E5%A4%A9)
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