A family member of mine has a daughter who is selling Girl Scout cookies. To help, I decided to buy half-a-dozen boxes of cookies. That led me down a research path to figure out who, exactly was making money from baking those treats.
[mainbodyad]As I explained in my investing lesson on how to read an income statement over at About.com, a division of The New York Times, gross profit and the gross profit margin are both important because they determine how much money out of each dollar sold is available for salaries, benefits, advertising, expansion, debt reduction, and…