作业帮问一道英语的数学问题...
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/18 05:08:25
问一道英语的数学问题...
A biathlon event involves running and cycling.Kim can cycle 30 km/h faster than she can
run.If Kim spends 48 minutes running and a third as much time again cycling in an event
that covers a total distance of 60 km,how fast can she run?
解答写成中文的就好...如果方便,..同学问我的...
A biathlon event involves running and cycling.Kim can cycle 30 km/h faster than she can
run.If Kim spends 48 minutes running and a third as much time again cycling in an event
that covers a total distance of 60 km,how fast can she run?
解答写成中文的就好...如果方便,..同学问我的...
一项包括跑步和自行车的竞赛运动,金骑自行车的速度比跑步快30公里/时.如果金用48分钟跑步,然后用它(前面跑步的时间)三分之一的时间接着来骑车,以此来完成60公里的赛程,问她跑步的速度是多少?(意译)
（假设跑步速度为 V km/h
V x 48/60 + (1/3 x 48/60) x (V + 30 )= 60
解方程得到 V = 48.75公里/时,另：跑了 39公里,骑自行车 21公里.供参考）
（假设跑步速度为 V km/h
V x 48/60 + (1/3 x 48/60) x (V + 30 )= 60
解方程得到 V = 48.75公里/时,另：跑了 39公里,骑自行车 21公里.供参考）