railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Speed Time and Distance Boat and River
A boatman drives his boat 18 km in 2 hours in the direction of the current of the river, and he drives that boat 10km in 2 hours in the opposite direction of the flow, so what is the speed of the flow per hour?
1
2 km/h
2
4 km/h
3
8 km/h
4
3 km/h