speed of object from A to B is 30km/h and from B to A is 20km/h.find its average speed of journey?
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avg speed=(30+20)/2
= 25 km/h
= 25 km/h
Tamash:
don't forget it is telling about speed not velocity
u r right
i also got it
but. it was late to editing
AB=30 t. let required time is t... now for returning time 30 t/20...&avg velocity=2*30t/{t+(3/2)t}. =24
sorry for wrong answer
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