Question

Upstream speed still water speed given then downstream speed

Answer 1

Aptitude :: Boats and Streams

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.

Answer 2

Answer:

for upstream we said that stream of water oppose the object either it is boat or man that is S(boat)-S(stream)

for downstream speed of stream support the follow of object that is S(boat)+S(stream)