数学题在线解答网为你搭建自我学习进步平台

上一篇：一批货物总重1.4×107kg，一次性运走用什么工具运输合适？

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  登山，往返一次需10小时，上坡每小时行6千米，沿原路返回时每小时行9千米，这条山路一共多少千米

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    2014-10-27 21:11:56    回复

    设：,这条路长X千米 根据题意列方程： X/6 + X/9=10 5X=180 X=36 36千米=36000米 答：这条路长36000米。

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  2014-10-26 11:23:07    回复

  登山，往返一次需10小时，上坡每小时行6千米，沿原路返回时每小时行9千米，这条山路一共多少千米

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