Question

A steamer goes downstream from one port to another in 4 hours . It covers the same distance upstream in 5 hours . If the speed of the stream is 2 km per hour .find the distance between the 2 ports

Answer 1

The speed upstream is :

Let x be the distance up or down the stream.

Speed upstream = x/5

Speed downstream = x/4

The difference of the two speeds gives the speed of the stream :

x/4 - x/5 = 2

5x - 4x = 2(4 × 5)

5x - 4x = 40

x = 40km

Answer 2

Step-by-step explanation:

Here U is speed of the stream

And

V is Speed of the streamer..

so Ans is 80Km