prozzy

the answer is -$97 for sure. os.tvboxnow.com# Z& b5 y4 q5 E: N: g- `' E
Think about it this way
& t- t. F7 L7 I( |tvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。6 c; Y- J, L3 t: \( A
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