state gov WBPSC Clerkship Mock Test 2023 - 24 Quantitative Aptitude Speed Time and Distance Boat and River
In still water the actual speed of a boat is 10 km./hr. and the speed of the river-current is 4 km./hr. What time will it take to cover a distance of 30 km. against the current ?
1
2 hrs.
2
3 hrs.
3
4 hrs.
4
5 hrs.