Question

IN HOW MUCH TIME WILL A 240m LONG TRAIN RUNNING AT 90KM/HR TO CROSS A MAN STANDING AT THE PLATFORM

Answer 1

Answer:

Let

T = Length of Train

P = Length of Platform

S = Speed of train = 90 km/h = 25 m/s

Time taken to cross the platform = 39 sec

Speed = 25 m/s

Distance = T + P = 240 + P

Time = 36 sec

Speed = Distance/Time = (240 + P)/36

25 = (240 + P)/36

25 x 36 = 240 + P

900 = 240 + P

P = 900 - 240

P = 660 m

Length of the train = 660 m

hope it helps you