JV Split Percent No Labor Partner

[Jon D.]

I'm going to try this more succinctly because my first post was likely too long and unnecessarily confusing.
2 partners on a property. Lets say *neither are contributing any labor or what labor is rendered is paid for separately.*

A is contributing 10% DP + only person on mortgage
B is contributing the other 10% DP.

In this scenario what do you think the equity split should be? 

How do you think it would change if A contributed 5% + mortgage and B contributed 15% of DP?