defence exam CRPF Head Constable Ministerial & ASI 2022 Mock Test Quantitative Aptitude Speed Time and Distance Average Speed
Mohan goes from A to B at the speed of 30 km/hr and return from B to A at the speed of x km/hr. If the average speed for the whole journey is 45 km/hr, then what is the value of x?
1
50 km/hr
2
60 km/hr
3
90 km/hr
4
70 km/hr