state gov Bihar Police Prohibition Constable 2022 Mock Test Series Quantitative Aptitude Speed Time and Distance Relative Speed
A girl travels 30 km at a speed of 15 km/h. She travels another 20 km at a speed of 10 km/h. What is her average speed for the entire journey?
1
15 km/h
2
12.5 km/h
3
13 km/h
4
11.5 km/h