railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A boat goes 10 km upstream and 12 km downstream in 4 hours. It can also go \(7\frac{1}{2}\) km upstream and 7 km downstream in \(2\frac{3}{4}\) hours. What is the speed (in km/h) of the boat when going upstream?
1
7
2
6
3
8
4
4