To find out how far Aaron runs, we need to calculate 2/5 of the total distance between Aaron's house and Curtis's house.
The total distance between the two houses is given as 1 1/3 miles. To calculate this in fraction form, we can convert 1 1/3 to an improper fraction:
1 1/3 = (3 * 1 + 1) / 3 = 4/3
Now, to find 2/5 of the total distance, we can multiply the total distance by 2/5:
(4/3) * (2/5) = (4 * 2) / (3 * 5) = 8/15
Therefore, Aaron runs 8/15 of a mile.