原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇' H* d0 h @- v! r
the answer is -$97 for sure. tvb now,tvbnow,bttvb0 C7 u9 I8 _. }1 T( c
Think about it this way + ]+ }* k W& p% V A9 T: O2 A) K
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
- u. q8 Y+ T& @tvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。* ~/ [2 p1 X, ?/ ^' h2 n
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2 [& T8 I2 v1 |9 i% _ K6 S1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇6 C. q# |) q2 r3 z. L8 R4 ^
www.tvboxnow.com$ f" t# o1 Y& Z$ {- ]# ?6 Q
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.tvb now,tvbnow,bttvb9 Y& e% F" Z' c1 A0 K! ^4 @9 Y
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。* a5 B4 q' R5 }/ ?- ?
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |