原帖由 prozzy 於 2007-5-18 23:05 發表。  5.39.217.76* i3 r) w, p& V
the answer is -$97 for sure.
+ |- ~: |" m6 itvb now,tvbnow,bttvbThink about it this way
$ ^9 d! C: F3 G6 h/ K公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
- S" j0 d: |6 ZTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
4 e! \- o: i7 M* c) M$ D* h& Z2 O5.39.217.76 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。% B% ^& k* F$ x4 ?% j0 y1 x
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。' C0 J1 M [" K( i" P4 L6 [8 D
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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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