Question

solve this word problem upstream downstream​

Answer 1

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Answer 2

=》》conept of upstream and downstream

Downstream/Upstream:

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 = 1/2× (a + b) km/hr.

Rate of stream = 1/2× (a - b) km/hr.

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