Question

Trains starting at thevsame time from 2 stations 200km apart and going in opposite direction cross each other at a distance of 110km from one of the stations. what is the ratio of their speed ?

Answer 1

let car a travels faster than b
car a:
distance=110
time=t
speed=110/t

car b:
distance = 200-110=90
time= t
speed  = 90/t

ratio of speed of car a to car b:
(110/t)/(90/t)= 11/9 or 11:9