Q. Two trains running in same direction cross each other in 20 seconds. Their speeds are 60 km/h and 40 km/h. What is the difference in their lengths if total length is 300 m?
✅ Correct Answer: (B)
100 m
Explanation: Relative speed = 20 km/h = 5.56 m/s; Distance = 5.56×20 ≈111 m (approx concept-based).
Explanation by: Hriday
Relative speed = 20 km/h = 5.56 m/s; Distance = 5.56×20 ≈111 m (approx concept-based).