Posts by Hypnot0ad


    He can cover the 6300m in 27 minutes at 14 km/hr. Train A will cover 72 km in 27 min at 160 km/hr. Train B will cover 54 km in 27 min. 72 + 54 = 126 km the two trains will cover in 27min which is less than 140 km they are from each other at start. When he reaches the switch, the two trains will not have yet collided.