To find out how many days it will take her to run the distance, we need to divide the total distance she wants to run by the distance she can run each day. The total distance she wants to run is 2/4 miles, and she can run 3/4 of a mile each day. 2/4 miles รท 3/4 mile/day = 2/4 miles x 4/3 mile/day = 8/12 mile/day = 2/3 days. She will need to run for 2/3 of a day to run 2/4 miles.