A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:
A. 2 : 1
B. 3 : 1
C. 3 : 2
D. 4 : 3
Answer: Option B
Solution(By Examveda Team)
Let man's rate upstream be x kmphThen, his rate downstream = 2x kmph
∴ (speed in still water) : (Speed of stream)
$$\eqalign{ & = {\frac{{2x + x}}{2}} : {\frac{{2x - x}}{2}} \cr & = \frac{{3x}}{2}:\frac{x}{2} \cr & = 3:1 \cr} $$
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Comments ( 1 )
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
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A. 2 : 1
B. 3 : 2
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D. Cannot be determined
E. None of these
A. 4 km/hr
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2:1 is the right answer