state gov Punjab Patwari Mock Test 2023 Quantitative Aptitude Speed Time and Distance Boat and River
John can row 30 km upstream and 44 km downstream in 10 hours. Also, he can row 40 km upstream and 55 km downstream in 13 hours. Find the speed of John (in km/hr.) in still water.
1
4
2
6
3
8
4
10