Question

6 a train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?

a.200m

b.240m

c.250m

d.300m

Answer 1

Time taken to pass the platform = 36 seconds

Time taken to pass the man = 20 seconds

Speed of the train = 54 km/h = 15 m/s

Distance covered while passing platform = Length of the Train + Length of the Platform

Distance covered while passing platform = 36 × 15 = 540 m

Length of the train = 20 × 15 = 300 m

Hence, length of the platform = 540 - 300 = 240 m

Length of the platform = 240 m

Hence, the option b is correct.