Question

A swimmer's velocity in the direction of flow of river is 16km/h and against is 8km/h . Calculate the swimmeeer's velocity in still water and velocity of flow of river?

Answer 1

Velocity of swimmer is 4 km/hr and velocity of river is 12km/hr.

Answer 2

Answer:

The velocity of the swimmer in still water is 4km/hour and that of the river is 12km/hour.

Explanation:

Upstream velocity of the swimmer( against the river current) = 16km/hour

Downstream velocity of the swimmer( in the direction of river current) = 8km/hour

Hence, to find out the velocity of swimmer (V) in still water we use the formula:

V= (Downstream speed- Upstream speed)/2

So V= (16-8)/2 = 8/2 = 4 km/hour

Now, velocity of river= (Downstream speed + Upstream speed)/ 2 =( 16+8)/2 = 12km/hour.