A man can swim in still water at a speed of 6 kmph and he has to cross the river and reach just opposite point on the other bank. If the river is flowing at a speed of 3 kmph, and the width of the river is 2 km, the time taken to cross the river is (in hours)

Options

A. `1 ms^(-1)`
B. `0.25 ms^(-1)`
C. `0.67 ms^(-1)`
D. `3 ms^(-1)`

Answer

A