Question

If the speed of a swimmer in still water is 9 km/h.
Find the downstream speed of the swimmer, when
the river is flowing with the speed of 6 km/h.​

Answer 1

Answer:

speed of swimmer= 9 km/h

speed of river= 6 km/ h

downstream speed= 9+6=15 km/h

Answer 2

Answer:

speed of swimmer in still water is 9km/h.

speed of river which is flowing with a speed of 6 km/h.

ATQ,

we were adding both speed .then we got it 9km/h + 6km /h we got it 15km/h . so, the downstream speed of the swimmer,when the river is flowing with the speed of 6km/h is 15km/h.