Unless I’m incorrect they said 20% offers from ED, 60% offers from EA, and 20% offers RD.
So lets say 12,000 given offers - that’s 2,400 ED, 7,200 EA, and 2,400 RD.
Assuming ED is 90% acceptance (since binding) and the other 2 are 40% acceptance.
That would be a freshman class of 2,160 ED (36%), 2,880 EA (48%), and 960 RD (16%).