How many words per minute can you type?
Ensure to review the job posting before the interview to familiarize yourself with the position requirements and preferred qualifications, i.e., expected words/minute.
Mention how many words per minute you can type. Should you be unable to meet the position requirements as per the job posting, mention you are willing to take a course or train, as required.
"I saw on your posting that you would prefer the candidate hired for this position to be able to type (X) words per minute. At the moment, I can type (X) words per minute. However, I am more than willing to train or take a course to increase my typing speed, as required."