一只小船从甲港到乙港逆流航行需要2h.水流速度增加一倍后,再从甲港到乙港需3h.水流速度增加后,从乙港返回甲港需航行多长时间?PS:用一元一次方程解答
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![一只小船从甲港到乙港逆流航行需要2h.水流速度增加一倍后,再从甲港到乙港需3h.水流速度增加后,从乙港返回甲港需航行多长时间?PS:用一元一次方程解答](/uploads/image/z/5920575-15-5.jpg?t=%E4%B8%80%E5%8F%AA%E5%B0%8F%E8%88%B9%E4%BB%8E%E7%94%B2%E6%B8%AF%E5%88%B0%E4%B9%99%E6%B8%AF%E9%80%86%E6%B5%81%E8%88%AA%E8%A1%8C%E9%9C%80%E8%A6%812h.%E6%B0%B4%E6%B5%81%E9%80%9F%E5%BA%A6%E5%A2%9E%E5%8A%A0%E4%B8%80%E5%80%8D%E5%90%8E%2C%E5%86%8D%E4%BB%8E%E7%94%B2%E6%B8%AF%E5%88%B0%E4%B9%99%E6%B8%AF%E9%9C%803h.%E6%B0%B4%E6%B5%81%E9%80%9F%E5%BA%A6%E5%A2%9E%E5%8A%A0%E5%90%8E%2C%E4%BB%8E%E4%B9%99%E6%B8%AF%E8%BF%94%E5%9B%9E%E7%94%B2%E6%B8%AF%E9%9C%80%E8%88%AA%E8%A1%8C%E5%A4%9A%E9%95%BF%E6%97%B6%E9%97%B4%3FPS%EF%BC%9A%E7%94%A8%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E8%A7%A3%E7%AD%94)
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