Two trains of equal length 150 m each run in opposite directions at 72 km/h and 108 km/h. How many seconds do they take to pass each other completely?
Q1. Two trains of equal length 150 m each run in opposite directions at 72 km/h and 108 km/h. How many seconds do they take to pass each other completely?
Answer: 6 seconds
Explanation: Relative speed is 72 plus 108, which is 180 km/h or 50 m/s. Combined length is 300 m, so time is 300 divided by 50, giving 6 seconds.