Algebra
Grayson has already walked 0.6 miles
Step-by-step explanation:
Grayson lives
miles from park
So the total distance is
miles
He has already waked
of the way to the park
If the total distance between Grayson's house and Park is 
and the distance he has already walked is 
Then
× 
⇒
× 
⇒
=
miles
⇒
= 0.6 miles
Hence, Grayson has already walked 0.6 miles