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Find the time taken by the slower train to pass the driver of the faster one.

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Two goods train 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.

posted Feb 4, 2016 by Yogeshwar Thakur

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1 Answer

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24 seconds

Speeds add up as trains move in opposite direction:
45+30=75 km/hr
The distance is the length of the faster train:
500 m=0.5 km
Time is:
0.5/75 km/km/hr=1/150 hr= 3600/150 sec= 24 seconds

answer Jul 29, 2018 by Hanifa Mammadov

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