A man wnt uphill with a speed of 20 km.p.h. and came downhill with a speed of 30 km p.h.
The average speed for his journey was
(a) 25 km. p.h.
(b) 22 1/2 km. p.h.
(c) 24 km. p.h.
(d) 25 1/2 km. p.h
Answers
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AVG speed = 20+30/2
50/2
25 km.p.h
50/2
25 km.p.h
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