Question

一道应用题甲、乙两地相距3.3千米,甲乙两地又一段上坡,一段平坡,一段下坡,已知上坡每小时行3千米,平坡每小时行4千米,

Answer 1

设上坡是X,下坡是Y,平地是Z

X/3+Z/4+Y/5=51/60

Y/3+Z/4+X/5=53.4/60

X+Y+Z=3.3

X=1.2KM=1200M

Y=1.5KM=1500M

Z=3.3-1.2-1.5=0.6KM=600M