insurence exam UIIC Assistant Mock Test 2023 Quantitative Aptitude Speed Time and Distance Boat and River
A boatman goes to upstream at a distance of 90 km. He increases the boat speed by 33.33% of his actual speed when he covers 2/3 of the total distance. How much time take to cover the total distance if the speed of the boat and river 30 km/hr and 20 km/hr?
1
5.5 hours
2
6.5 hours
3
7.5 hours
4
8.5 hours
5
None of these