这些车共有86个轮子

  • 时间:2020-05-16 11:04:24
  • 分类:数学世界
  • 阅读:119 次

这是一道“鸡兔同笼”类型问题:停车场内有24辆车,汽车4个轮子,三轮车3个轮子,这些车共有86个轮子,那么汽车有多少辆?请问这道题怎么写?

数学题解答:这里向大家介绍用假设法解决鸡兔同笼类型的问题,如果对于用算术方法解决“鸡兔同笼”类型问题还不太懂,这样的同学有福了!

假设停车场内全部是三轮车,那么24辆车应该有多少个轮子?[是不是24×3=72(个)?当然是!]

但实际上却有86个轮子,为什么多了14个?[86-72=14(个),为什么?当然是因为实际上停车场内24辆车不全是三轮车,还有汽车了!汽车可是4个轮子的!所以轮子总数就多了。]

每辆汽车比每辆三轮车多几个轮子?[当然是多1个了!因为4-3=1嘛!]

开始我们以为停车场内全部是三轮车,但实际上还有汽车混在里面。由于一共多出了14个轮子,所以就有14辆汽车![14÷1=14(辆)]

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