Question

sara can downsteam at 15km/hr and upsteam at 11km/hr fund speed in still water​

Answer 1

Answer

13 km/hr

Explanation

Let speed of stream=y

Let speed of Sara in still water =X

X+Y= 15

X-Y=11

Adding both equations,

2x=26

X=13

So her speed in still water = 13 km/hr