Question

how long will train 210m long take to clear a platform 165m long if its speed is 50km/hr ?

Answer 1

27 sec is the time taken

Answer 2

Find the total distance to clear:

Total distance = 210 + 165 = 375 m = 0.375 km

Find the time needed to clear the platform:

Speed = 50 km/h

Distance = 0.375 km

Time = Distance ÷ Speed

Time = 0.375 ÷ 50

Time = 3/400 hour

Time  =  3/400  x 60 = 9/20 mins

Time =  9/20 x 60 = 27 seconds

Answer: It takes 27 seconds to clear the platform