CrossFit Games Open 20.2 Workout

Complete as many rounds as possible in 20 minutes of:
4 dumbbell thrusters
6 toes-to-bars / hanging knee raises (scaled)
24 double-unders / single unders (scaled)

35-lb dumbbells / 50-lb. dumbbells (rx)
20-lb dumbbells / 35-lb dumbbells (scaled)