A man rows down a river 15 km in 3 h with the stream and returns in The rate at which he rows in still water is
2.5 km/h
1.5 km/h
3.5 km/h
4.5 km/h
A boat goes 15 upstream and downstream in 3 hours 15 minutes. It goes 12 km upstream and 14 km downstream in 3 hours. What is the speed of boat in still water.
4 km/hr
6 km/hr
10 km/h
14 km/hr