a motorcycle drives from a to b with a uniform speed of 20km/h and returns back with a speed of 30km/h. find its avg speed
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a.v=sum of speed /no of speed
=20+30/2
=50/2
=25
a.v is 25kh/h
=20+30/2
=50/2
=25
a.v is 25kh/h
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