Brandon and Shanda walk to grandma's house at a rate of 4 mp
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Brandon and Shanda walk to grandma's house at a rate of 4 mph.they ride their bicycles back home at a rate of 8 mph over the same route that they walked .it takes one hour longer to walk than ride .how long did it take them to walk to Grandma's?
Let t be the time for walklng and s be the distance.
Then 4t = 8(t-1) ; 4t = 8t -8; t = 2 hours; Therefore,s = 4t = 8 miles
再问: 您能不能写上步骤,谢谢!计算方法!
再答: 我不是写了计算步骤了嘛?先设t为走路的时间,s为总距离。第二行就是步骤了啊,最后得出t=2 小时,s=8 miles 我还多算了距离,题目没有要求的。
再问: 哦,谢谢您,您能不能把题目的中文意思发给我!我用翻译机,看不懂!
再答: 题目说Brandon和Shanda以4 mph的速度走路去外婆家。回来的时候是骑自行车,走的是相同的路线。已知去的时候比回来的时候多走了一个小时,求去的时候走了多久?
再问: 答案就是2小时是不是?不用写8miles
再答: 是的
Then 4t = 8(t-1) ; 4t = 8t -8; t = 2 hours; Therefore,s = 4t = 8 miles
再问: 您能不能写上步骤,谢谢!计算方法!
再答: 我不是写了计算步骤了嘛?先设t为走路的时间,s为总距离。第二行就是步骤了啊,最后得出t=2 小时,s=8 miles 我还多算了距离,题目没有要求的。
再问: 哦,谢谢您,您能不能把题目的中文意思发给我!我用翻译机,看不懂!
再答: 题目说Brandon和Shanda以4 mph的速度走路去外婆家。回来的时候是骑自行车,走的是相同的路线。已知去的时候比回来的时候多走了一个小时,求去的时候走了多久?
再问: 答案就是2小时是不是?不用写8miles
再答: 是的
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