2 pullups 10 pushups 20 swings

How many rounds can you do in 20 minutes?

Edited to add: I got 13 rounds in 20 minutes. I'm not actually weird about the number 13 or anything, but I had it in my head that I wanted to do 15 rounds, (30 pullups, 150 pushups, 300 swings total), so I went a couple minutes longer. The pullups got pretty hard toward the end, but I should've picked a harder pushup variation.