原帖由 prozzy 於 2007-5-18 23:05 發表。 
9 g2 y9 w0 a% C3 X1 othe answer is -$97 for sure. 公仔箱論壇2 U9 Z6 W/ U% e( ~
Think about it this way
% P6 H. k9 e6 H- x1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)- W! _5 T6 z2 A
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
3 ^6 a3 K5 K8 s6 D1 A5.39.217.76 tvb now,tvbnow,bttvb; a: x8 @ m! x( m
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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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.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。: T7 R4 U( q5 p3 T) G- r; D, i
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。9 V; H U: [8 Q- S
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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