RRB Group-D Model Paper 19 with answers for online practice

Formula used:
Speed = Distance/Time
Calculation:
Speed of the train = 54 km/hr = 54 × 5/18 = 15 m/sec
Length of the train = 270 m
Length of the tunnel = 270 m
Total distance to be covered is combined length of both trains = 270 + 270 = 540 m
⇒ Time taken by train to cross the tunnel = 540/15 = 36 seconds