Boats and Streams
Posted by
Ravi Kumar at Sunday, August 7, 2011
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Important facts:
1)In water, the direction along the stream is called down stream.
2)Direction against the stream is called upstream.
3)The speed of boat in still water is U km/hr and the speed of stream is V km/hr then
speed down stream =U + V km/hr
speed up stream = U – V km/hr
Formulae:
If the speed down stream is A km/hr and the speed up stream is B km/hr then speed in still water = ½(A+B) km/hr
rate of stream =1/2(AB) km/hr