a man drives 180 km from City a to city B in 4 hours 10 minutes and returns to city a in 3 hours 20 minutes. find the average speed of the whole journey.
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Average speed formula is distance upon time so in both case from AtoB and BtoA the distance is same 180km and time are different so if we total the time in minutes that is 450min so 180 upon 450 and now we will convert the minutes into hours that is 7h5min and now 180 upon 7h5m now find it
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