the distance between port a and port b is 360km it take a ship 35 hours to cross and recross once between the two ports,
the distance between port a and port b is 360km it take a ship 35 hours to cross and recross once between the two ports,it takes the ship in countercurrent direction 5hours more than which in downstream direction we know that the speed of still water is 12km/h Question:how many hours will the boat take when it across and recross once bet ween the two ports?請哥哥姐姐們寫一下步驟.
英語人氣：662 ℃時間：2020-06-21 14:45:38
優(yōu)質(zhì)解答
a與b港口的距離是360km,一艘船在兩個港口之間來回一次要35個小時,已知靜水速度為12km/h,船逆水航行要比順?biāo)叫卸嘤?個小時.問：這艘船在兩個港口間來回一次需要多少時間?這題是不是有問題啊?您是要翻譯出來,還是要...
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