Question

a streamer goes down stream and covers the distance between two parts in 4hours while it covers the se distance up stream in 5 hours .if the speed of the stream is 2km/h find the speed of the streamer in the still water
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Answer 1

Answer:

18kmph      or      18 km/hr

Step-by-step explanation:

Let the speed of the streamer be x

A.T.Q (according to the question)

the speed downstream =(x+2) km/h

the speed upstream =(x−2) km/h

distance covered in 4 hours downstream = distance covered in 5 hours upstream (given)

so,

4(x+2)=5(x−2)

4x+8=5x−10

4x−5x=−10−8

−x=−18

∴x=18km/h

hope it helps...