other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Speed Time and Distance Average Speed
A man covers a certain distance by car driving at 30 km/hr. And he returns to the starting point at 20 km/hr. Find his average speed?
1
24 km/hr.
2
27 km/hr.
3
15 km/hr.
4
12 km/hr.