The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?
Q1. The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?
Answer: 12 seconds
Explanation: Downstream speed = 15+3 = 18 km/hr = 5 m/s; time to cover 60 m = 60/5 = 12 seconds.