Answer:
The Answer is 5 (3/4) more miles.
Explanation:
For this we just need to add and subtract fractions.
We we want to get to 13 (1/2) miles...however we have already ran
3 (1/2) + 4 (1/4) ... this is the same as 3.5 plus 4.25. When we add those up we get...
3.5+4.25 = 7.75 then we subtract ... 13.5 - 7.75 = 5.75 = 5 (3/4) our answer.