原帖由 prozzy 於 2007-5-18 23:05 發表。 
7 {6 v0 e% z4 j: G公仔箱論壇the answer is -$97 for sure.
( C5 c q9 u6 Z2 |- L; y公仔箱論壇Think about it this way tvb now,tvbnow,bttvb. `! t3 Z# Y9 @: R t+ D" s: B# B
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
6 n, C9 T, T* t9 ~. P* f6 ^) K2) Now, the owner discovered that the 100 bucks is fake. You can th ...
7 J( M: `, J. a, {tvb now,tvbnow,bttvb TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。 A. N- `" M" @5 C+ S9 t9 b I+ v
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇% L$ u$ `& ~; @* n/ k" p4 F! U
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。) g' w* Q' l4 ~7 w0 q3 k- X
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.公仔箱論壇: }$ }8 {; j& p, s7 k& U' U4 o
8 V+ q2 J7 }/ m2 E H* UI 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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