Simplify the ratio 18 : 30 : 72

3:5:9 you get it by dividing each number by 6

To simplify this ration we need to divide each member of ration with same number.

We can start with 2.

18/2: 30/2 : 72/2 or

9:15:36

Now we can divide by 3 because 15 isn't divisible by 2.

we get:

3:5:12

This ration cannot be simplified further.