原帖由 prozzy 於 2007-5-18 23:05 發表。  5.39.217.76- t+ g4 R5 e; [, T) @! n1 y$ l% n/ U
the answer is -$97 for sure. TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。9 Q0 B' U7 o/ T) Y
Think about it this way 2 l' R5 f; }7 A2 B$ o4 w" B' @& q5 C
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.76% m0 W7 c1 f B: D& f! N. d" I C
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
! r6 y! y7 n7 s4 S3 ZTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
- m( F) o9 A) r/ t$ p9 x7 v1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
" v/ S- G. w7 N$ D$ _公仔箱論壇 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。" E5 G3 Q. N% B6 A; W& 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.
& B: z5 L' \& `7 Atvb now,tvbnow,bttvb
$ F' t) }8 J, KTVBNOW 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。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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