AP Police SI Exam Prelims 2016 Paper 1 (Mental Ability)

Two trains with different speed and having lengths 120 mts and 96 mts respectively run on parallel lines of rails. If they run in the same direction, the faster train passes the slower one in 18 seconds. If they are running in opposite directions with the same speed as earlier, they pass each other in 12 seconds. Then the speed of the faster train (in km/hr) is