The ratio between the time taken by a boat to travel equal distance upstream and downstream is 2 : 1. If the speed of the stream is 11 km/hr find the speed of the boat in still water.
1
30 km/hr
2
27 km/hr
3
36 km/hr
4
33 km/hr
5
39 km/hr
The ratio between the time taken by a boat to travel equal distance upstream and downstream is 2 : 1. If the speed of the stream is 11 km/hr find the speed of the boat in still water.