state gov UP Police Assistant Operator (Radio Cadre) Mock Test Quantitative Aptitude Speed Time and Distance Average Speed
A body travels half the distance with velocity v1 and next half with velocity v2, then the average velocity of the body will be
1
√(v1v2)
2
(v1+v2) / 2
3
v2 / v1
4
2v1v2 / (v1+v2)