原帖由 prozzy 於 2007-5-18 23:05 發表。 
7 ^3 X' }- k* n$ J8 z5 k0 A: Ftvb now,tvbnow,bttvbthe answer is -$97 for sure.
$ H- b6 P+ U; P7 @/ s2 M5 m公仔箱論壇Think about it this way 5.39.217.763 @4 p* e# D* n. Y- j. ^( O9 O5 V
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)7 m" n) c4 Y: y8 q
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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7 C( I. n. g( i8 t/ G0 N! G: 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。1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong( z) b, D+ p- X* [" Z. i( h0 X
5.39.217.76& S- w+ y& x+ [2 a6 o) x4 f
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.
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7 h! N. `% T! WI 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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