A man runs a distance of 9km/h for the first 4km and then 2km/h for...
A man runs a distance of 9km/h for the first 4km and then 2km/h for...
A man runs a distance of 9km/h for the first 4km and then 2km/h for the rest of the distance. The whole run takes him one hour. His average speed for the first 4km is?? Show ur workings?
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