Equity partner - what is a good cut?

[Michael Graff]

I have an equity partner who basically wants to be the bank on my flips. I use all their cash, and they want a % of the profit. I find the houses, I'm the GC on all the work, I get the properties sold, my partner is just the playing the bank for all funds needed. What would be a fair % to give them of the profit made?
Tks for you input in advance!