原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb3 g; i7 @% A B$ C) U# p& @4 B
the answer is -$97 for sure. 5.39.217.77+ A( f5 m) a& r( O6 U% j* _" a# b
Think about it this way 公仔箱論壇1 ^ k" x& Q: m; ]3 ^$ W6 ~# q
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。; Q( @* J) }7 }5 q1 P& n2 Q
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 5.39.217.77/ ]* o; W9 [$ k3 @/ b J
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( v0 l k' A0 @/ {) O$ L1 y# M公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇/ |" e3 ]' k+ M; z; P! j
公仔箱論壇% i( F; ^/ f1 _! \$ q' g6 G- J
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
* L9 I+ y& |$ b, J: `tvb now,tvbnow,bttvb tvb now,tvbnow,bttvb& X, u5 I4 o1 V' ]: j& ^5 W
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |