Civil Services WBCS (Executive) Prelims + Mains Mock Tests 2025 Quantitative Aptitude Speed Time and Distance Boat and River
A man's speed in still water is 4 km/h more than the speed of the current. If the man takes a total of 10 h to cover 45 km downstream and 35 km upstream, then the speed of the man in still water is:
1
15 km/h
2
22 km/h
3
18 km/h
4
20 km/h