原帖由 prozzy 於 2007-5-18 23:05 發表。  ( `( k7 z+ I' P4 G1 h2 w
the answer is -$97 for sure.
+ _5 x& p, c: T5 r7 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。Think about it this way
4 X5 }/ ~5 o# F3 v& X) X+ Q公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)1 y8 }1 ~) _6 q9 a* }: d
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
' z1 {: H! w, c% b" ~( i: etvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong7 c" {1 X: r; o+ {! c
公仔箱論壇7 t7 ~3 d% i* x: z5 o5 o
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
2 c3 U! ?/ o, j2 X3 h) }. G9 i5.39.217.76 公仔箱論壇' A" @' z Q$ Y6 M8 M- D, B
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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