railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Speed Time and Distance Boat and River
A boat goes downstream in two-third the time it takes to go upstream. Then the ratio between the speed of boat in still water and speed of the stream is
1
5 : 1
2
1 : 5
3
1 : 4
4
4 : 1