A train covers a journey of 4 stations connected to form a square at speeds of 20, 40, 60 and 80 km/hr. what is the average speed of train for this journey?
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avg speed = Total distance / Total time taken
avg speed = 40+1600+3600+6400/4= 2910m/s
avg speed = 40+1600+3600+6400/4= 2910m/s
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Answer:
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