Teaching EMRS JSA (Junior Secretariat Assistant) Mock Test Series 2023 Quantitative Aptitude Speed Time and Distance Boat and River
A boy can row upstream at 12 km/hr and downstream at 23 km/hr. What is the speed of the stream?
1
3.5 km/hr
2
4.5 km/hr
3
6.5 km/hr
4
5.5 km/hr