A train 100 metres long moving at a speed of 50 km/h crosses a train 120 metres long coming from opposite direction in 6 seconds. The speed of the second train is
A
132km/h
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B
82km/h
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C
60km/h
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D
50km/h
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Solution
The correct option is C82km/h Total distance covered in 6 seconds =100+120=220m=0.220km
Total time, t=63600hr
Now, let x be the speed of the train of 120m long.