Two trains of length 100 m and 200 m are 100 m apart.
Two trains of length 100 m and 200 m are 100 m apart. They start moving towards each other on parallel tracks, at speeds 90 kmph and 126 kmph. In how much time will the trains cross each other?
Answer/Solution
20/3 sec
Steps/Work
Relative speed = (90 + 126)* 5/18 = 12 * 5 = 60 mps.
The time required = d/s = (100 + 100 + 200)/60
= 400/60 = 20/3 sec.
Answer: E
The time required = d/s = (100 + 100 + 200)/60
= 400/60 = 20/3 sec.
Answer: E