state gov DSSSB Junior Secretariat Assistant Mock Test 2021 (Old) Quantitative Aptitude Speed Time and Distance Boat and River
A man can swim 12 km/hr in still water. Time taken by the man to row upstream is thrice the time taken by him to row downstream. Find the speed of the stream?
1
5 km/hr
2
6 km/hr
3
7 km/hr
4
8 km/hr