What is an appropriate investor - carpenter profit split?

[Jared Yoder]

I'm sure this question has come up before but I am having difficulty finding any topics related to it in the forum. 

I am a carpenter and can do all of the labor on a house flip. I am curious what an appropriate profit split would be for myself and an investor? I would need the investor to put up all the money for the house and pay for materials. I would do everything else. I approached a friend of mine who is in business and he wanted an 80/20 split. That, to me sounded a little high. What say you?

Thanks.