Question

A steamer goes downstream and covers the distance between two parts in 4 hours while it covers the same distance upstream in 6 hours . If the speed of the stream is 2km/h ,find the speed of the streamer in still water . ​

Answer 1

Let the distance between the two ports be x km.

Then, speed downstream = x/4 And speed upstream = x/5 Speed of the stream, = [speed downstream - speed upstream]/2 = (x/4 - x/5)/2 Or, (5x -4x)/40 = 2 Or, x/40 = 2 Thus, x = 80 km.

Distance between two ports

km.