How many wpm to put on my resume?

[Jake]

I'm 18, and I'm applying for a college-age paid internship for a video game brand. The internship requires that I keep up their social media to an extent, and help edit small videos, so typing skills are definitely encouraged. My typing speed can vary within 10 or so wpm depending on the day. I'd say my average when I'm copying something down is around 75, but I often test as high as 89. Remember, these tests are under five minutes, so they're probably not accurate of how I'd type over the course of a few hours. What number should I put under "skills"? Thanks.