Answer:[tex]32.77\ mi/hr[/tex]
Explanation:
Given
Initially Reading on the odometer is [tex]31,500\ miles[/tex]
Final reading on the odometer is [tex]31,713\ miles[/tex]
Time taken is [tex]t=6.5\ hr[/tex]
average velocity [tex]=\dfrac{\text{Displacement}}{\text{time}}[/tex]
[tex]v_{avg}=\dfrac{31713-31500}{6.5}[/tex]
[tex]v_{avg}=\dfrac{213}{6.5}[/tex]
[tex]v_{avg}=32.77\ mi/hr[/tex]
Thus the average velocity of mail truck is [tex]32.77\ mi/hr[/tex]
