engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A man can row 5 km/h in still water. If the speed of the current is 2.5 km/h, it takes 4 hours more in upstream than in the downstream for the same distance. The distance is:
1
10.5 km
2
15 km
3
7.5 km
4
12 km