原帖由 prozzy 於 2007-5-18 23:05 發表。  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。5 ]4 @+ v7 g$ w: e* S- D
the answer is -$97 for sure. 公仔箱論壇! r0 ~; V u9 P& ~
Think about it this way
* Z1 O% u1 \7 F1 _7 [www2.tvboxnow.com1) 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。) D6 ?6 N! D+ ^; }
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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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 wrong
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- u" k6 X0 S. _0 _# w# \) q' k$ }5 n5 U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.
3 `, y+ f- Q1 j2 g2 b9 I+ `www2.tvboxnow.com 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。% t6 [0 N) O7 B; w% |* J
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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