A swimmers speed in the direction of flow of river is \( 16 \mathrm{~km} \mathrm{~h}^{-1} \). Sw...

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A swimmers speed in the direction of flow of river is \( 16 \mathrm{~km} \mathrm{~h}^{-1} \). Swimmers speed against the direction of flow of river is \( 8 \mathrm{~km} \mathrm{~h}^{-1} \). Calculate the swimmers speed in still water and the velocity of flow of the river.
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