原帖由 prozzy 於 2007-5-18 23:05 發表。 
8 G8 {$ z4 e) g9 u$ K' J9 l Sthe answer is -$97 for sure.
; N7 `5 C' ^# |* ~1 H' RThink about it this way tvb now,tvbnow,bttvb1 [" L0 ], k5 T6 a4 W
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
9 R$ o2 s- y2 y8 F$ itvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
5.39.217.77:8898. l5 M2 |; h9 f" g2 `
( u, J4 c9 y/ r; b1 ] t5.39.217.77:88981) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
: ?6 r& Z; ^8 }% o$ [2 o公仔箱論壇
$ } F0 ^6 r3 j! ]* ythink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
6 _/ [* M! N+ [8 H5 B- O/ r 公仔箱論壇* J# j7 m) } Z$ ?& m5 l, q, y$ 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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