一道题,不会,请各位大哥大姐帮忙某人骑自行车由甲地去乙地,所走的道路不是下坡就是平路,下坡的车速是15km/h,平路时车速是12km/h,共用50min到达乙地;现在从乙地按远路返回,走平路车速为10km
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 10:21:37
![一道题,不会,请各位大哥大姐帮忙某人骑自行车由甲地去乙地,所走的道路不是下坡就是平路,下坡的车速是15km/h,平路时车速是12km/h,共用50min到达乙地;现在从乙地按远路返回,走平路车速为10km](/uploads/image/z/14627158-70-8.jpg?t=%E4%B8%80%E9%81%93%E9%A2%98%2C%E4%B8%8D%E4%BC%9A%2C%E8%AF%B7%E5%90%84%E4%BD%8D%E5%A4%A7%E5%93%A5%E5%A4%A7%E5%A7%90%E5%B8%AE%E5%BF%99%E6%9F%90%E4%BA%BA%E9%AA%91%E8%87%AA%E8%A1%8C%E8%BD%A6%E7%94%B1%E7%94%B2%E5%9C%B0%E5%8E%BB%E4%B9%99%E5%9C%B0%2C%E6%89%80%E8%B5%B0%E7%9A%84%E9%81%93%E8%B7%AF%E4%B8%8D%E6%98%AF%E4%B8%8B%E5%9D%A1%E5%B0%B1%E6%98%AF%E5%B9%B3%E8%B7%AF%2C%E4%B8%8B%E5%9D%A1%E7%9A%84%E8%BD%A6%E9%80%9F%E6%98%AF15km%2Fh%2C%E5%B9%B3%E8%B7%AF%E6%97%B6%E8%BD%A6%E9%80%9F%E6%98%AF12km%2Fh%2C%E5%85%B1%E7%94%A850min%E5%88%B0%E8%BE%BE%E4%B9%99%E5%9C%B0%EF%BC%9B%E7%8E%B0%E5%9C%A8%E4%BB%8E%E4%B9%99%E5%9C%B0%E6%8C%89%E8%BF%9C%E8%B7%AF%E8%BF%94%E5%9B%9E%2C%E8%B5%B0%E5%B9%B3%E8%B7%AF%E8%BD%A6%E9%80%9F%E4%B8%BA10km)
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