railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Speed Time and Distance Boat and River
A girl can swim at a speed of 10½ km/h in still water and she finds that it takes her twice as long to swim upstream as to swim downstream. The speed of the stream is
1
4 km/h
2
3 km/h
3
2 ½ km/h
4
3 ½ km/h