Answer:
9.6 km
Explanation:
Issa jogged 2/3 of the way home from school.
Then he was tired, so he walked the remaining 3200 m.
In other words, the remaining 3200 m is 1/3 of the way from school to home.
Let the distance from school to home be x. Therefore:

Therefore, from school to home he traveled 9600 m.
To put this is kilometres:
1000 m = 1 km
9600 m = 9600 / 1000 = 9.6 km
He traveled 9.6 km from school to home.