原帖由 prozzy 於 2007-5-18 23:05 發表。  6 l/ L# g- l+ A7 i: c' _' T8 o; r
the answer is -$97 for sure.
7 ]( c+ j( I' m% O/ j4 x5.39.217.76Think about it this way tvb now,tvbnow,bttvb! `' s* ^% Z* w& y1 ]% {
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)3 b" y0 V& v$ E8 k" k5 V3 }
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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, l- ~) X9 P- R$ j7 @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。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' u+ b V/ n+ `% H8 ]
1 B n, n" `& ~/ f+ Vthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.2 ?7 {; l# r) f# u5 D- e5 n
tvb now,tvbnow,bttvb/ ?9 f2 r, r* l$ t) E& M
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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