A person can swim in water at 4 km/h. If the speed of water 2km/h, how many hours will the man take to swim back against the current for 6km?
3 hours
4 hours
5 hours
Insufficient data
Explanation:
Speed Upstream =(4-2) km/hr = 2 km/hr
Time taken to swim 6 km against the surrent is $\dfrac{6}{(4-2)}=3 hours
Speed Upstream =(4-2) km/hr = 2 km/hr
Time taken to swim 6 km against the surrent is $\dfrac{6}{(4-2)}=3 hours