Question

Two trains 121m and 99m are running in opposite direction with velocity 40km/hr and 32km/hr in ehat time they willcompletely cross each othar

Answer 1

If They Are In Opposite Dircetions To Each Other

So Relative Velocity = 40+32 = 72 km/hr

72km/hr = 5/18*72 = 20m/sec

Now Total Distance = 121+99 = 220

Now Time = Distance/Speed

=> 220/20 = 11 sec

So They Will Take 11seconds To Cross Each Other