原帖由 prozzy 於 2007-5-18 23:05 發表。  公仔箱論壇7 p s/ ~. L: F& L, J# {# ~. X7 _
the answer is -$97 for sure. $ M \6 \% B' j. [; d4 Y
Think about it this way 5.39.217.77:8898; W% t3 q1 e) f8 R1 {, p5 Z
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 z! e, R$ j% L2) 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
$ Q. ]0 v5 @% g, C- Stvb now,tvbnow,bttvb - @5 I' r' n4 _
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill., [& A6 n, y7 A7 w+ ?$ p) v( t
/ N1 g3 P! E0 b, o2 mtvb now,tvbnow,bttvbI 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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