Two trains are running on parallel lines in the same direction at a speed of 50 km/hr and 30 km/hr respectively. The faster train crosses a man sitting in the slower in the slower in 18 seconds. What is the length of the faster train?
Solution
Correct Answer: Option C
The relative speed of the faster train is= (50 - 30) km/hr
= 20 km/hr
= 20*1000/3600 m/s
Now,
The faster train travels in 1 second = 20*1000/3600 m
The faster train travels in 18 seconds= 20*18*1000/3600 m
&nb
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