Respuesta :
Answer:
2
Step-by-step explanation:
Well if he buys two games in the first place from a friend, that means he has 2 new games, and if he buys two more from a garage sale, he would now have 4 games. If two of them didn't work, it would be 4-2=2. So, he ended up with 2 good games and 2 bad games.