Question

plz answer it sincerely...irrelevant answer will be reported​

Answer 1

Let The Speed Of Stream Be x km/hr.

Now Speed Upstream = 35-x

Speed Downstream = 35+x

Now Time = Distance/Speed

3/2 = 60/35+x

And

2 = 60/35-x

Cross Multiplying We Get  

105+3x = 120

3x = 15

x = 5

Check By Solving Other Equation

2 = 60/35-x

70-2x = 60

2x = 10

x = 5

So

Speed Of Stream = 5km/hr