Two trains cross each other at speeds of `36 km//h` and `54 km//h` travelling in the opposite directions in 2 sec. What is the length of the second train (in km)?

A passenger in a train with speed 72 km/h observed another train coming from the opposite direction with speed 32.4 km/ h . What is the length of the second train if it crosses the passenger in 10s ?

A 150m long train crosses a pillar in 15 seconds and a train equal in length coming from its opposite direction in 12 seconds.The speed of the second train is: a.) 45km/hr b.) 48km/hr c.) 52km/hr d.) 54km/hr

A 175 m long train crosses a man walking at a speed of 9 km/h in the opposite direction in 10 sec The speed of the train (in km/h) is:

A 175 m long train crosses a man walking at a speed of 9 km/h in the opposite direction in 10 sec. The speed of the train (in km/h) is :

Two trains 85 m and 155 m long, runat the speeds of 62 km/h and 82 km/h respectively, in opposite directions on parallel tracks. The time which they take to cross each other is: