1) 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 : 2 E) None of these Answer: Option BExplanation:Let man’s rate upstream $=x$ km/h Doenstream rate $=2x$ km/h Speed in still water : Speed of stream $\frac{2x + x}{2}:\frac{2x - x}{2}$ = 3:1
