Teaching DSSSB PRT Special Educator Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A boat can travel 10 km upstream and 20 km downstream in 7 hours. It can travel 20 km upstream and 10 km downstream in 11 hours. What is the speed of the boat in still water?
1
8 km/h
2
6 km/h
3
4 km/h
4
2 km/h