The speed of a boat in still water is. It can go upstream and return downstream to its original point in . Find out the speed of the stream.
Step1: Assumption of the speed of the stream, upstream and downstream
Let the speed of the stream
Speed of the boat in still water
Speed of the boat downstream
Speed of the boat upstream
Step2: Forming the equation according to the question.
Step3: Now solve the equation according to the question.
The speed of the stream is .