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
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