设甲乙两站距离为x米,可得比例:
(x+100):(x-100)=(3x+300):(x+300)
(x+100)(x+300)=(x-100)(3x+300),
(x+100)(x+300)=(x-100)×3×(x+100),
x+300=3x-300,
x=300.
300×2=600(米).
答:甲、丙两站的距离为600米.
设甲乙两站距离为x米,可得比例:
(x+100):(x-100)=(3x+300):(x+300)
(x+100)(x+300)=(x-100)(3x+300),
(x+100)(x+300)=(x-100)×3×(x+100),
x+300=3x-300,
x=300.
300×2=600(米).
答:甲、丙两站的距离为600米.