The effective speed of a boat is 15.2 km/h against the stream and 20.8 km/h along the stream. Find the speed of the stream.

Given:  ​

Upstream speed U = 15.2 km/h 

Downstream speed, D = 20.8 km/h 

Formula Used:  ​

Speed of stream = $$\frac{D - U}{2}$$ 

where, D is downstream speed. 

          U is upstream speed

​