GIVEN: Length of a train = 120 m Speed of a train = 36 km/hr Length of a platform = 130 m FORMULA USED: Total Distance = (Length of the train + length of the platform) Time = Distance/Speed CALCULATION: Distance = 120 + 130 = 250 m Speed of Train = 36 km/hr = 36 × 5/18 = 10 m/sec. ∴ Required time = 250/10 = 25 sec.