A train travels from station a to station b with a speed of 36km/hr and returns to a with speed of 54 km/hr what is the average velocity and average speed of the train
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the average velocity is 0 as the displacement is 0
Time =x\54
average speed =total distance /total time
total distance =x+x=2x
total time=x/36 +x/54
average of speed 2x/x/36+x/54
2x ×108/5x
=43.2km/hr
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