A train 108 m long moving at a speed of 50 km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train is

45 km/hr

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54 km/hr

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66 km/hr

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82 km/hr

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Solution

The correct option is D 82 km/hr
Let the speed of the second train be x km/hr
Relative speed = (x + 50) km/hr

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