This link should be much helpful to your question and provide more than what you are asking to https://infogr.am/alexgrey_1398868104
ok so she is selling the card for .75 but makes a profit of .35
.75-.35=.4 (what wasn't profit) divid 42 by .4
42/.4=105+42 (have to add in profit portion) =$147 Gross income
Is there a picture to go with the question?
LeBron James definitely lol