原帖由 prozzy 於 2007-5-18 23:05 發表。 
' e( D7 O) m% e( ^# H" S$ v: C公仔箱論壇the answer is -$97 for sure.
5 n, G7 I9 M" V! P- I' mTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Think about it this way 3 f$ z9 b1 L! A2 i0 T
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvboxnow.com9 M' G0 w/ y l
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
1 ?+ Y" F3 F a3 O3 h3 p- l公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong+ N. `7 A/ |9 D; I4 j3 u; K
$ F8 t. l: Z7 _9 u公仔箱論壇think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。) t, d$ m' d2 X$ r2 A5 m- f
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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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