Question

A boat's speed in still water at x km/h. in a stream flowing at y km/h, if it cover the same distance up and down the stream, then its average speed is

Answer 1

The distance is upstream and downstream.

Answer 2

Explanation:

Answer: The speed of the boat in still water or 'b' = 10 km/h. The speed of the current or the river = 4 km/h. Therefore the speed of the boat when going upstream = b – r = 10 – 4 = 6 km/hr. Therefore the distance covered in one hour = 6/1 = 6 km.