原帖由 prozzy 於 2007-5-18 23:05 發表。 
$ ~* ?5 Z! V' F* Z$ |7 vtvb now,tvbnow,bttvbthe answer is -$97 for sure. : U3 z' i9 U( j3 a, a: U
Think about it this way 5.39.217.770 e# w: O3 n7 {) W; G4 O- o+ q; T
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
. D3 F7 t8 U3 h. K/ e+ ~" n5.39.217.772) 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
$ K$ M) `; s$ tTVBNOW 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。 公仔箱論壇7 P4 n* F) s9 @' @! |2 c3 w- i" `
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.
$ G. w6 I' Y" `- K, n6 iTVBNOW 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。
/ u3 N* s1 [9 e* e2 WTVBNOW 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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