A man can swim in still water at a speed of `4 kmph`. He desires to cross a river flowing at a speed of `3 kmph` in the shortest

A man can swim in still water at a speed of `4 kmph`. He desires to cross a river flowing at a speed of `3 kmph` in the shortest time interval. If the width of the river (in hours) and the horizontal distance travelled (in km) are respectively
A. `3/4,9/4`
B. `3/5,3`
C. `1/4,15/4`
D. `3/sqrt7,7`

A man can swim in still water at a speed of `4 kmph`. He desires to cross a river flowing at a speed of `3 kmph` in the shortest time interval. If the

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