The answer is $1.8
This is because if 5kg equals $9.
So we have to find out what 1kg is equaled to and to get from 5kg to 1kg, we have to divide by 5. We have to divide $9 by 5 as well to get the price. And 9 divided by 5 is $1.8.
This is just how ratio works.
You can also lay it out like this:
5kg : $9
⬇️(➗by 5)
1kg : $1.8
Hope this helps!
Please give Brainliest!
