state gov Punjab Police SI Mock Test 2023 Quantitative Aptitude Speed Time and Distance Boat and River
A boat travel 18 km upstream and 14 km downstream in 4 hours. It travels 3 km upstream and \(10\frac{1}{2}km\) downstream in \(1\frac{1}{4}\) hours. What is the speed (in km/h) of the stream?
1
5
2
\(4\frac{1}{2}\)
3
\(5\frac{1}{2}\)
4
4