defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Quantitative Aptitude Speed Time and Distance Boat and River
A boat can cover 42 km upstream and 81 km downstream together in 8 hours, whereas it can cover 48 km upstream and 54 km downstream in 7 hours. Find the time taken by the boat to cover 90 km in still water.
1
5 hours
2
5 hours 30 minutes
3
6 hours
4
6 hours 30 minutes