railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Speed Time and Distance Boat and River
A boat takes 40 minutes to travel 12 km downstream, when the speed of stream is 8 km/hr. What is the speed of the boat in still water?
1
2 km/hr
2
10 km/hr
3
18 km/hr
4
21 km/hr