A train is running at a speed of 99 km/hr. If the train is 565 m long, then what will be the time (in seconds) taken by it to cross a 975m long tunnel?

54 56 40 42

56

Speed = 99 km/h 99 km/h = 99 × \(\frac{5}{18}\) = \(\frac{55}{2}\) m/sec Total distance = 565 + 975 = 1540 m Time =  \(\frac{1540 × 2 }{55}\) = 56 seconds