Teaching EMRS JSA (Junior Secretariat Assistant) Mock Test Series 2023 Quantitative Aptitude Speed Time and Distance Average Speed
A person covers a total distance of 270 km by bike. In the first 4 hours, its speed is 50 km/h and it decreases to 35 km/h in the remaining journey. What is the average speed of the bike?
1
39 km/h
2
45 km/h
3
48 km/h
4
42 km/h