Find the time taken by a 150 m long train, running at a speed of 63 km/h, to cross another train of length 100 m, running at a speed of 45 km/h in the same direction.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 50 seconds.
Relative speed = 63 - 45 = 18 km/h = 5 m/s
Total distance to cover = 150 + 100 = 250 m
Time required = 250/5 = 50 seconds