12 bars of 4/4 at a walking 85 BPM, 0:34 of playing, on crash, ride, snare and kick.
The beat the song is built on is a 2-bar phrase, played through bars 1-12 -- 100% of every bar the kit plays. Learn that one and the song is very nearly finished.
12 bars: 12 keep time. The longest unbroken stretch of time is bars 1-12.
85 BPM, in 4/4, with the time kept in thirty-second notes. The room plays it at any tempo from a quarter of that up to the written one, against the record where the record can follow.
100 out of 100. Hard, and what makes it hard is how many notes a second it asks for. The beat itself is 94 out of 100; the rest of the number is everything around it.
12 bars, about 0:34 at the written tempo. The course breaks it into 3 exercises over 2 sittings, about 21 minutes each.
crash, ride, snare and kick. Nothing in the part asks for anything else.