Question 584802
Let the distance walked be x.
The total course would be 1 (1/1)

So, distance ran + distance walked = total course length
     3/5  + x  = 1
x = 1  - 3/5
x = 5/5  - 3/5
x = (5-3)/5
x = 2/5

She walked 2/5 of the course.