SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
The upstream speed of a man is 7 km/h and his downstream speed is 10 km/h. Find the rate of man speed in still water and the rate of current.
1
9.5 km/h and 1.5 km/h
2
8.5 km/h and 1.5 km/h
3
8 km/h and 2.5 km/h
4
8.5 km/h and 2 km/h