Question

the boat whose speed is 15km/hr in still water and goes 30km down stream and come back in total of 4hr 30min,then find the speed of strem is (km/hr)

Answer 1

The speed of stream in km/hr is 5 km/hr .

Answer 2

Answer:

9/2=(30/15+x)+(30/15-x)

x=5km/hrs