If you can bear with me here, it's difficult to explain but, No she didn't. She payed 600 dollars for the car at the beginning, so that's our base amount. Then she sold it for a profit of two hundred dollars, we will set that aside now. Then she bought it back for 1000 and sold it again for another two hundred dollar profit, but now we take the 00 dollars in profit and see if bying it back decreased the cost below 600, wich it didn't, therefore she made zero profit because when factoring in her purchase costs, she bought the car for six hundred dollars both times, equaling 1200 dollars in spending, and sold it for 1200 dollars, equaling it out. Hope it made sense, its hard to explain the way i thought of it.
