the distance between port a and port b is 360km it take a sh
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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?请哥哥姐姐们写一下步骤.
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a与b港口的距离是360km,一艘船在两个港口之间来回一次要35个小时,已知静水速度为12km/h,船逆水航行要比顺水航行多用5个小时.问:这艘船在两个港口间来回一次需要多少时间?
这题是不是有问题啊?您是要翻译出来,还是要计算出结果啊?前面不是已经说了需要35个小时么?怎么又变成问题了?难道是脑筋急转弯?如果是做题的话,我倒觉得应该把前面说的总用时删了……
有什么不会的尽管说哈,
这题是不是有问题啊?您是要翻译出来,还是要计算出结果啊?前面不是已经说了需要35个小时么?怎么又变成问题了?难道是脑筋急转弯?如果是做题的话,我倒觉得应该把前面说的总用时删了……
有什么不会的尽管说哈,
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