求问几道数学题,用算术解,急用甲乙两港相距210千米,以川净水速度每小时兴18千米,船从甲港顺水驶向乙港,水速每小时3前米到达乙港要多长时间?照这样计算,返回甲港要多长时间?甲乙两人同
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![求问几道数学题,用算术解,急用甲乙两港相距210千米,以川净水速度每小时兴18千米,船从甲港顺水驶向乙港,水速每小时3前米到达乙港要多长时间?照这样计算,返回甲港要多长时间?甲乙两人同](/uploads/image/z/7096029-69-9.jpg?t=%E6%B1%82%E9%97%AE%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E7%94%A8%E7%AE%97%E6%9C%AF%E8%A7%A3%2C%E6%80%A5%E7%94%A8%E7%94%B2%E4%B9%99%E4%B8%A4%E6%B8%AF%E7%9B%B8%E8%B7%9D210%E5%8D%83%E7%B1%B3%2C%E4%BB%A5%E5%B7%9D%E5%87%80%E6%B0%B4%E9%80%9F%E5%BA%A6%E6%AF%8F%E5%B0%8F%E6%97%B6%E5%85%B418%E5%8D%83%E7%B1%B3%2C%E8%88%B9%E4%BB%8E%E7%94%B2%E6%B8%AF%E9%A1%BA%E6%B0%B4%E9%A9%B6%E5%90%91%E4%B9%99%E6%B8%AF%2C%E6%B0%B4%E9%80%9F%E6%AF%8F%E5%B0%8F%E6%97%B63%E5%89%8D%E7%B1%B3%E5%88%B0%E8%BE%BE%E4%B9%99%E6%B8%AF%E8%A6%81%E5%A4%9A%E9%95%BF%E6%97%B6%E9%97%B4%3F%E7%85%A7%E8%BF%99%E6%A0%B7%E8%AE%A1%E7%AE%97%2C%E8%BF%94%E5%9B%9E%E7%94%B2%E6%B8%AF%E8%A6%81%E5%A4%9A%E9%95%BF%E6%97%B6%E9%97%B4%3F%E7%94%B2%E4%B9%99%E4%B8%A4%E4%BA%BA%E5%90%8C)
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