The question is not about his "fair share." It's about the total cost of his support for the year, paid by anyone who contributed to his support. You add up the total cost of his support for the year, including housing, food, clothing, medical care, education, travel and transportation, entertainment, recreation, etc., no matter who paid for it. Then you determine how much he paid by himself. The question is whether the amount he paid himself is more than half of the total of all his support.
His fair share has nothing to do with it. The question is whether the amount he paid himself is more than half of the total cost of his support.
