defence exam ITBP Constable (Animal Transport) Mock Test 2024 Quantitative Aptitude Speed Time and Distance Boat and River
A motor boat has speed 30 km/hr in still water. It goes 60 km down stream and comes back in 9/2 hours. What is the speed of the stream?
1
5 km/hr
2
8 km/hr
3
10 km/hr
4
12 km/hr