Answer:
[tex]\boxed{\sf Average \ Speed = 54\ km/hr}[/tex]
Step-by-step explanation:
Given:
Distance = S = 18 km
Time = t = 20 min = 20/60 = 0.33 hours
Required:
Average Speed = <v> = ?
Formula:
Average Speed = Total Distance Covered / Total Time Taken
Solution:
A . S = 18 / 0.33
A.S = 54 km/hr
