I already answered that question, here's the link: https://brainly.com/question/10534199.
But if you still want the explanation, here it is:
"So if we want to measure probability, you have to add, then divide, like this:
First [tex]4+8+6[/tex], which gives us 18.
Then we see, that 6 is 1/3 of 18, so we conclude. The answer is 33.33%.
Hope this helped!"