Q Two goods trains, each 500 m long, are running in opposite directions on parallel tracks. Their speeds are 45 km/hr and 30 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster one.

A. 12 sec
B. 24 sec
C. 48 sec
D. 60 sec

Correct Answer: B

Explanation:
Relative speed = 75 km/hr = 75?(5/18)=20.83 m/s. Distance=500m. Time=500/20.83?24 sec.

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