Teaching DSSSB PRT Special Educator Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A ship can row a certain point along with the downstream and return the same point. What was the average speed of the ship in the whole journey, if the speed of ship in still water and current are 10 km/hr and 5 km/hr respectively?
1
9.5 km/hr
2
8.5 km/hr
3
6.5 km/hr
4
7.5 km/hr