A train of length 342 m is running at 54 km/h. In how much time(in seconds) will it cross a bridge of length 438 m?
Answer & explanation
Correct answer: option 4
Speed = 54 km/h
54 km/h = 54 × \(\frac{5}{18}\) = 15 m/sec
Total distance = 342 + 438 = 780 m
Time taken to cross bridge = \(\frac{780}{15}\) = 52 sec