the answer is -$97 for sure. www.tvboxnow.com2 ?0 ^! |8 {: `% Q7 A3 q
Think about it this way 公仔箱論壇* A7 m7 I3 |1 T% I
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
0 v! D! `6 `; R$ {6 [9 S, v$ s, ?tvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can think this as a lost of $100. therefore the overall gain is $3-$100 = -$97 |