原帖由 prozzy 於 2007-5-18 23:05 發表。  公仔箱論壇" o: c0 Z1 [4 E- p+ w
the answer is -$97 for sure. 5.39.217.76, m& D( K2 ~3 {3 {& P% q+ Q! O
Think about it this way
4 J3 Z, ], _7 ]3 MTVBNOW 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。1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18) b: i! n C0 [- b5 u: @: u I
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
/ ]" S- Y" X, \/ P( h1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
' c2 O( G) t. z- M. T- k0 a: @5.39.217.76 公仔箱論壇& b0 J) ?5 u$ |# d+ }. N
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
) J: N" ~- L- }8 b3 Q4 m, d* F% OTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
6 _! B5 R* l1 v4 P$ h! YI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-4-9 06:27 PM
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