Two trains starting at the same time from two stations 400 km apart and going in opposite direction ...........

Quantitative Aptitiude (CLAT) Time & distance

Two trains starting at the same time from two stations 400 km apart and going in opposite direction cross each other at a distance of 230 km from one of the stations. What is the ratio of their speeds?

11:9

23:17

18:4

None of these

Explanation:

Solution: In same time, they cover 230 km and 170 km respectively.
For the same time speed and distance is inversely proportional.
So ratio of their speed = 230 : 170 = 23 : 17