## A man walks uphill at an average speed of 3 km/hr and downhill at an average speed of 5 km/hr. find his average speed on a journey over 18 k

Question

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## Answers ( )

Answer:Uphill speed = 10Km/h

Downhill speed = 36Km/h

Let distance = x

Average speed = total distance /time

= (x+x)/(x/10 + x/36) = 15.65 m/s