原帖由 prozzy 於 2007-5-18 23:05 發表。  9 J6 v. s# I5 V" b
the answer is -$97 for sure. 2 ~% D" i. I. j3 Z, e
Think about it this way
: A# Z; K( m# \& C- {) b公仔箱論壇1) 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。4 H: t& W" A! R( z9 K) q/ J
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
5.39.217.77:8898% w; _7 U7 A. c4 l- v
( o3 F0 f" Q, K3 _6 C; e6 a' w5.39.217.77:88981) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong6 E! e3 C# v* J8 Q4 i t) x" X# t
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think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.公仔箱論壇/ y. k/ M4 n1 E3 L# {
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。6 n# m. X( Q' T& w) J/ w$ 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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