原帖由 prozzy 於 2007-5-18 23:05 發表。 
; F6 p+ P) N2 V' }9 Dtvb now,tvbnow,bttvbthe answer is -$97 for sure. 公仔箱論壇! G- }5 n4 u7 S9 n+ K
Think about it this way
; e2 n* d# q* B( E1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
6 V- Y) Y, j5 P [: S5.39.217.772) Now, the owner discovered that the 100 bucks is fake. You can th ...
4 V( L: V c" F j5.39.217.771) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
6 `- b/ Q1 f& r/ d2 o5 T公仔箱論壇
: O5 ~' m5 p! Y" RTVBNOW 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, 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。- o/ o1 F7 H/ C2 n
6 p6 B& S7 S5 _9 U% ^( z5 J! m5 eTVBNOW 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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