数学题:小红上学时坐车,回家步行
- 时间:2020-05-13 15:05:48
- 分类:数学世界
- 阅读:130 次
数学题:小红上学时坐车,回家步行,在路上一共用了36分钟;如果往返都坐车,全部行程只需10分钟。如果往返都步行,需要多少分钟?
数学题解答:
“如果往返都坐车,全部行程只需10分钟。”说明坐车一趟只需5分钟,10÷2=5(分钟)
“小红上学时坐车,回家步行,在路上一共用了36分钟”,说明步行一趟只需31分钟,36-5=31(分钟)
往返都步行,时间再乘2就可以了,是62分钟。31×2=62(分钟)
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