railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Speed Time and Distance
A river is running at 2 kmph. A boat goes 40 km upstream from A to B and also returns back from B to A in total 10 hours. The speed of the boat in still water is:
1
6.23 kmph
2
7.97 kmph
3
7.32 kmph
4
8.47 kmph