原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb" m! r$ f" _1 f6 d0 M2 v9 [
the answer is -$97 for sure. 5.39.217.776 a; \: W& s$ M7 L% m
Think about it this way 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。0 j' A2 @. g, o
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.77% G: H$ T+ l- c: M+ a7 b
2) Now, the owner discovered that the 100 bucks is fake. You can th ... * M7 K* e- k! |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。
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong4 z5 V' W0 `2 X4 M) G
+ l/ X# W+ x6 Q% J公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.tvb now,tvbnow,bttvb& j" u: H+ A% F; y9 l; ?
% M# i( b: t# U+ M0 ]0 e# W7 p+ J5.39.217.77I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |