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Zaurus 中文论坛 Forum Index » 经典难题

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小鸟旅程
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badog
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Joined: 01 Nov 2006
Posts: 1021

小企鹅: 6575

PostPosted: 2006-Dec-05 Tue, am9:12 Reply with quote
 Post subject: 小鸟旅程

有一辆火车以每小时15公里的速度离开洛杉矶直奔纽约,另一辆火车以每小时20公里的速度从纽约开往洛杉矶。如果有一只鸟,以30公里每小时的速度和两辆火车同时启动,从洛杉矶出发,碰到另一辆车后返回,依次在两辆火车来回飞行,直到两辆火车相遇,请问,这只小鸟飞行了多长距离?
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wowotou



Joined: 27 Nov 2006
Posts: 38

小企鹅: 1101

PostPosted: 2006-Dec-05 Tue, pm12:02 Reply with quote
 Post subject:

记得有一个厉害的人物在这个问题上失误 用级数 麻烦 小学生的答案是

x/(15+20)*30 x是两点间距离
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badog
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小企鹅: 6575

PostPosted: 2006-Dec-05 Tue, pm3:29 Reply with quote
 Post subject:

不可想象的强
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