Answer:
km left to run.
Explanation:
First, lets calculate the distance Gavin has ran so far.
To do that, we can find out 2/3 of 5 km:
![(2)/(3) * 5 = (10)/(3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bpm9z2t5hoccurq57dth6mhnu238ey0j5l.png)
To calculate the distance left to run, we subtract the total distance by the distance he ran so far which is:
![5 - (10)/(3) = (15)/(3) - (10)/(3) = (5)/(3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/kyuobovi1eb20vi1afgtmmbrgtlvbgukz3.png)
So he has
km left to run.