Find the average speed if a man travels at a speed of 24kmph up and 36kmph down at an altitude

Here in this ques altitude 200m is a dummy part. av. speed=2*36*24/(36+24)=28.8 kmph
10 years agoHelpfull: Yes(26) No(2)

avg speed = 2xy(x+y)= 28.8 kmph
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Average speed= Total distance/ Total time taken= (200+200)/((200/24)+(200/36))
=28.8 kmph
10 years agoHelpfull: Yes(4) No(0)
H.P of 24,36 = (2*36*24/(36+24))
= 28.8 kmph
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Using the formula 2xy/x+y
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there is nothing to do with 200m . and average is 2*24*36/(24+36) = 28.8km/h
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avg spee=2xy/(x+y)
x=24kmph
y=36kmph
=> avg speed=28.8kmph
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144
total distance / total time
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2*s1*s2/(s1+s2)
=2*24*36/(24+36)
=28.8kmph
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Find the average speed, if a man travels at a speed of 24kmph up and 36kmph down at an altitude of
200m.