A train of length 212 m is running at 45 km/h.In what time (in seconds)will it cross a platform of length 188 m?

36 42 32 40

32

Speed of train = 45 km/h 45 km/h = 45 × \(\frac{5}{18}\) m/sec = 12.5 m/sec Total distance = 212 + 188 = 400 m Time taken to cross bridge of length 188 m = \(\frac{400}{12.5}\)  = 32 sec