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A man covers a distance from a town A to a town B on scooter at 30 kmph and rides back from B to A at 20 kmph. His average speed is
None of these
The average speed is = (2ab)/a+b , where 'a ' is speed A to B and 'b' is speed from B to A.
= (2x30x20) / 50 = 24 kmph
By: Brijesh Kumar ProfileResourcesReport error
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