设甲到乙 上坡xKM,下坡yKM,平路zKM
x/40=y/50=z/45
x/40+y/50+1/4=x/50+y/40
=> 40y=50x => x/40+x/40+1/4=x/50+x/32 => x/800=1/4 => x=200 => y=250 => z=225
∴x+y+z=200+250+225=675 (KM)
答:甲到乙的距离为675KM.
设甲到乙 上坡xKM,下坡yKM,平路zKM
x/40=y/50=z/45
x/40+y/50+1/4=x/50+y/40
=> 40y=50x => x/40+x/40+1/4=x/50+x/32 => x/800=1/4 => x=200 => y=250 => z=225
∴x+y+z=200+250+225=675 (KM)
答:甲到乙的距离为675KM.