railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Speed Time and Distance Boat and River
A motor boat whose speed is 20 km/h in still water goes 75 km downstream and comes back in 10 hours. What is the speed of the stream?
1
20 km/h
2
15 km/h
3
12 km/h
4
10 km/h