Q. A 280 meter long train is moving at 60 km/h. The time taken by the train to cross a 220 meter long tunnel, is

Explanation:

To clear a tunnel, the train must cover its own length plus the tunnel’s length.
– Total distance = 280 m + 220 m = 500 m
– Convert speed: 60 km/h = 60 × (1000/3600) m/s = 16.666… m/s = 50/3 m/s
– Time = Distance / Speed = 500 ÷ (50/3) = 500 × 3 / 50 = 30 seconds
Therefore, the train takes 30 seconds to cross the tunnel.