Answer
The average velocity is $~0.5 ~km/min~$ (east)
Work Step by Step
We can find the displacement:
$displacement = 10~km~- 3~km = 7~km ~(east)$
$average~velocity = \frac{displacement}{time}$
$average ~velocity= \frac{7~km}{14~min}$
$average ~velocity= 0.5~km/min$ (east)
The average velocity is $~0.5 ~km/min~$ (east)
