原帖由 prozzy 於 2007-5-18 23:05 發表。 
/ h5 N- c& R$ D: n9 Ythe answer is -$97 for sure. 公仔箱論壇1 @" g6 k9 ^% ~* K; m2 N
Think about it this way
' i/ L u+ y7 g$ K8 j公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.76. Y. Y4 L3 b0 `, X9 T) a
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
" F5 r) ~7 g8 b$ L$ p( C J' f+ ]公仔箱論壇
9 a, k8 X: ^) u7 M& z& }0 c1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb3 V! Z0 J4 C, n4 k& d
[7 B" @1 o. X fthink 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.
0 J4 G" s( k# ?- C1 yTVBNOW 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。
7 S" {1 a8 @* b2 G5 |1 BTVBNOW 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。I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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