Find average speed if a man travels at speed of 24kmph up and 36kmph down at an
altitude of 200m. Formula is 2xy/(x+y)
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Answer:28.8kmph
Step-by-step explanation:
2xy/(x+y)
2*24*36/(24+36)
1728/60 = 28.8
The answer is 28.8kmph.
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