A man covers half of his journey at 6 km/h and the remaining half at 3 km/h. His average speed is
A. 9 km/h
B. 4.5 km/h
C. 4 km/h
D. 3 km/h
Answer: Option C
Solution(By Examveda Team)
$$\eqalign{ & {\text{Average}}\,{\text{speed}} \cr & = \frac{{2xy}}{{ {x + y} }} \cr & = \frac{{2 \times 6 \times 3}}{{ {6 + 3} }} \cr & = \frac{{36}}{9} \cr & = 4\,{\text{kmph}} \cr} $$This Question Belongs to Arithmetic Ability >> Speed Time And Distance
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Comments ( 2 )
Related Questions on Speed Time and Distance
A. 48 min.
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D. 62 min.
E. 66 min.
A. 262.4 km
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E. None of these
A. 4 hours
B. 4 hours 30 min.
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4.5km/hr is that right answer
it should be in detail how u can solve it without ellaborate it
please expl
ain the solution