1) A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place? A) 2.4 km B) 2.5 km C) 3 km D) 3.6 km E) 4 km Answer: Option AExplanation:Downstream speed $=5+1$ $=6$ kmph Upstream speed $=5-1$ $=4$ kmph Let the distance be $=x$ km $\frac{x}{6}+\frac{x}{4}$ $=1$ $x$ $=\frac{12}{5}$ = 2.4 km
