Disregard. The block reward total goes from 125 to 50 after block 12000. Miners get 60% of 50, or 30 coins per block then.
So once we hit block 12000, 40% of the coins go towards masternodes. That's 50 coins to masternodes, and 125 - 50 = 75 coins per block left for miners. The block structure states only 50 coins go to miners after block 12000. What happens to the other 25 coins per block after block 12000?
From OP-
Masternode Reward: 40% of block reward after block 12000
Block Structure
Block 1: premine
Block 2-500: 0 EDEN
Block 501-12000: 125 EDEN
Block 12000-XXXXX: 50 EDEN