Q2. A champion swimmer wants to cross a river spanning 2 km. The velocity of the flow of water in the river is 6 km/hr. The swimmer desires to go exactly to the opposite end. His maximum speed in still water is 10 km/hr. Find the time he would take to cross the river?
- (a) 10 min.
- (b) 15 min.
- (c) 20 min.
- (d) 25 min.