Answer:
1:3
Step-by-step explanation:
Since we know it's going to be inches to feet we can write it like 6:18 but to find how many feet to ONE inch you divide both sides by 6.
6 ÷ 6 = 1
18 ÷ 6 = 3
So that's why its 1:3
Hope that helps and have a great day!