原帖由 prozzy 於 2007-5-18 23:05 發表。 
% t& B" {. v/ @the answer is -$97 for sure. tvb now,tvbnow,bttvb- Z: z4 w) V8 |9 R* O2 T- o0 m
Think about it this way + L% D' z( V* D
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
; [' {* b% G! s, U& aTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ...
. H! e6 h. O+ C& N& V7 } 5.39.217.76$ L9 q$ V' o* b% Q3 \- b
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.763 M6 n/ V( H5 u6 x7 U6 y) [1 W
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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.( s0 e: V# }+ K# l; C4 l: \3 m5 d
公仔箱論壇% I, Y, u" F b' b2 f0 _& U
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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