Asked by Hussan
A man walk from his home to town ,6 km away at a speed of 4 km/h and return s home by tanga at speed of 12 km/h.what is the mans average speed for the whole journey.
Answers
Answered by
Steve
total distance: 12 km
total time: 6/4 + 6/12 = 2 hr
so, ...
total time: 6/4 + 6/12 = 2 hr
so, ...
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