An authentication system was tested with a sample of $50$ login attempts. Out of these attempts, $10$ were from unauthorized users and $40$ were from authorized users. The system incorrectly authenticated $2$ of the unauthorized users and incorrectly rejected $6$ of the authorized users. The False Acceptance Rate $($FAR$)$ is $\_\_\_\_\_\_\_\%$ and the False Rejection Rate $($FRR$)$ is $\_\_\_\_\_\%.$