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The speed of a boat when travelling d...

The speed of a boat when travelling down streams is 32 km/hr, whereas, when travelling upstream if is 28 km/hr, what is the speed of the boat in still water and the speed of the stream?

A

`60 km//h`, `4 km//h`

B

`30 km//h`, `2 km//h`

C

`20 km//h`, `1 km//h`

D

None of these

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