A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?
Q1. A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?
Answer: 3
Explanation: Swimming against the current, the effective speed is 4 − 2 = 2 km/h. Time = Distance ÷ Speed = 6 ÷ 2 = 3 hours.