Answer:
27 feet
Explanation:
We can find this answer by taking the initial amount like shown following steps:
First we take the total amount and divide it by 8 to know how much 1/8 is (9)
Second, we multiply that number that we got (9) by 5 since he has already done 5/8 of the fence (45)
Lastly, we know that he has already done 45 ft of the 72 total ft so we subtract 45 from 72 which gets us:
27 ft