列车从甲站到乙站正常速度为60km/h.某次列车从甲站出发时晚点8min,司机把车速提高到80km/h,

8+2=10
10min=1/6时
60*(1/6)=10
10/(80-60)=0.5
80*0.5=40

0.5时=30min
30+10=40min
甲、乙两站间的距离40km
列车从甲站到乙站正常行驶所需时间为40min