a boy travels from A to B with a speed of 10 kilometre per hour and then from B to a speed of 20 km per hour find the average speed of the boy for this trip
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Vav=2v1v2/(v1+v2)------->distance same..
=400/30
=13.33 km/h=correct answer
sorry....
i was confused....
Answered by
1
the average speed of the boy for this trip is 13.33 km/h
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