Calculations based on Boats and streams

Boats and Streams

In water, the direction along the stream is called downstream. And,  the direction against the stream is called upstream.

If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then

Speed downstream = (u+v) km/hr.

Speed upstream = (u-v) km/hr

If the speed downstream is a km/hr and the speed upstream is b km/hr, then :

Speed in still water = (a + b)/2 km/hr

Rate of stream = (a-b)/2 km/hr

Calculating rate of man in still water and rate of current

Formula : Rate of man in still water = (a + b)/2

Input

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Check your output in all other similar units

Rate in still water {{mvalue}}
Rate of current {{cvalue}}

Calculating rate upstream and downstream

Formula : Rate downstream = (rate of man in still water + rate of current)

Input

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Check your output in all other similar units

Rate downstream {{downvalue}}
Rate upstream {{upvalue}}

Calculating rate upstream, downstream, speed of current and speed of man in still water

Formula : Rate downstream = (distance/time)

Input

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Check your output in all other similar units

Rate downstream {{downvalue}}
Rate upstream {{upvalue}}
Rate in still water {{mvalue}}
Rate of current {{cvalue}}
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