If 2/5 has been paved that means that 3/5 remains
28 1/3 times the 3/5 that remain
convert the mixed number to improper fraction by multiplying 28 by 3 and adding it to the 1 on the top of the fraction.
85/3
Then multiply
85 3 255
----- x ----- = ---------
3 5 15
Convert that back into a whoe number by dividing, 15 into 255 is
17 miles