A 150 meter long train crossed a man walking at a speed of 6 km in the oppo- site directions in 6 seconds. The speed of the train in km/hr is

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A 150 meter long train crossed a man walking at a speed of 6 km in the oppo- site directions in 6 seconds. The speed of the train in km/hr is

A66

B84

C96

D106

Answer:

B. 84

Read Explanation:

Distance=150m Speed = Speed of train + Speed of Man Time = 6 second Speed of train + Speed of man = 150/6 = 25m/s 25m/s = 25 x 18/5 = 90km/hr Speed of train = 90 - 6 = 84km/hr

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