In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
A. 3 kmph
B. 5 kmph
C. 8 kmph
D. 9 kmphr
Answer: Option C
Solution (By Examveda Team)
Speed in still water= $$\frac{1}{2}$$(11 + 5) kmph
= 8 kmph
This Question Belongs to Arithmetic Ability >> Boats And Streams
speed =distance/time
distance=16km
time= 1Hour +1 hour=2 hours
therefore, speed = 16/2 or 1/2×16
here is where the half is coming from
stream+speed of boat=11km/h
stream-speed of boat= 5 km/h
___________________________
2(stream) =16km/h
so stream =16/2 km/h
=8km/h
Sir or mam from where you get the 1/2 in this question plz tell
where you had got the 1/2