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A man can swim at the rate of 5 kmh^(-1)...

A man can swim at the rate of `5 kmh^(-1)` in still water A. One km wide river flows at the rate of ` 3 kmh^(-1)` . The man wishes to swim across the river directly opposite to the starting point. How much time will be take to cross the river

A

`(1)/(4)` hours

B

1 hours

C

`(3)/(4)` hours

D

2 hours

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