the answer is -$97 for sure. www.tvboxnow.com3 d9 [. T! P9 J- k$ Q/ B
Think about it this way
0 b- K$ C" e. \1 a, s Z" f3 Ywww.tvboxnow.com1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
% h. P$ p% k) x& [3 Q u% ?公仔箱論壇2) 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 |