state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Speed Time and Distance Boat and River
A person first goes 26 km upstream and then goes 34 km downstream. The speed of the current is 5 km/hr and the speed of the boat in still water is 15 km/hr. Find the average speed of the whole journey.
1
600/43 km/hr
2
500/47 km/hr
3
700/47 km/hr
4
400/43 km/hr