engineering recuitment Cochin Shipyard Executive Trainee Mechanical Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
The speed of a stream is 9 km/hr. A boat goes 21 km and comes back to the starting point in 8 hours. What is the speed (in km/hr) of the boat in still water?
1
10
2
12
3
8
4
15