Correct Answer - Option 4 : 27 seconds
Given:
Length of a train is 150 m
Speed of a train is 60km/hr
Length of a bridge is 300 m
Formula Used:
Speed = Distance/Time
Calculation:
We know that,
km/hr × 5/18 = m/sec
⇒ 60 × 5/18 = 50/3 m/sec
Total distance to cover,
⇒ 150 + 300
⇒ 450 m
Using the formula,
⇒ 50/3 = 450/Time
⇒ Time = (450 × 3)/50
⇒ Time = 27 sec.
∴ Time required to cross the bridge is 27 seconds.
