What are the chances of spawning a 5 star eevee at den 65?

Question

I am terrible at math, and I can’t figure this out. If I’m posting a bad question let me know, this is my first time on the site. They say the chances of getting a rare spawn are 10% right? But then, what are the chances of getting a 5-star eevee out of that? Thank you!

Answer 1

There is a 15% percent chance of getting a five star Eevee in either game.

Source: https://www.serebii.net/swordshield/maxraidbattles/den65.shtml