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
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Comments ( 4 )
Related Questions on Boats and Streams
A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours
E. None of these
A. 8.5 km/hr
B. 9 km/hr
C. 10 km/hr
D. 12.5 km/hr
E. None of these
A. 2 : 1
B. 3 : 2
C. 8 : 3
D. Cannot be determined
E. None of these
A. 4 km/hr
B. 5 km/hr
C. 6 km/hr
D. 10 km/hr
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