other govt exam ISRO Assistant Mock Test 2022 Quantitative Aptitude Speed Time and Distance Boat and River
A man rows down a river 15 km in 3 hrs. with the stream and returns in \(7\frac{1}{2}\) hrs, the rate at which he rows in still water is
1
2.5 km/hr
2
1.5 km/hr
3
3.5 km/hr
4
4.5 km/hr