Question

Akram while driving to office has speed of 80km/hr as his average speed on return along the same path his average speed is 40km/hr what is average speed of akram in whole journey.​

Answer 1

Average speed=
Total time
Total distance travelled
​


=
4
2
​

80×
4
1
​
+40×
4
1
​

​
=30×2=60km/hr
=60×
18
5
​
=
3
50
​
m/s=16.7m/s