Aptitude Day 284

Problems on Trains:  

1. A train 50 m long is running at the speed of 36 km/hr. Find the time taken by it to pass a man standing near the railway line.

Solution:

                  Speed = 36*5/18 

                             = 10 m/s.

                  Time = 50/10

                            = 5 seconds.

2. A train is moving at a speed of 150 km/hr. If the length of the train is 90 m, how long will it take to cross a railway platform 110 m long?

Solution:

                 Speed = 150*5/18 

'                           = 250/6 m/s.

                 Length = 90+ 110

                             = 200m

                 Time = 200/(250/6) 

                          = 4(4/5) seconds.