原帖由 prozzy 於 2007-5-18 23:05 發表。 
% X* I' j& X9 f2 d/ q- ztvb now,tvbnow,bttvbthe answer is -$97 for sure.
: p# k% X' E) M. X" u/ O3 {2 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
% p9 [- h& ?* a! K- @. B1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.775 u6 F1 Y/ t, S9 J
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 3 X/ X( V/ ?5 }( V$ L' S, P公仔箱論壇% r0 h( G& z: p+ P- K2 |
tvb now,tvbnow,bttvb5 {3 P7 T: ?/ k& t4 t' ?* ^
1) 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! u- o o) Q; d2 @
1 Z7 e% h8 S# m: qTVBNOW 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.tvb now,tvbnow,bttvb' M5 F& r h& h* M5 i1 ~0 G2 L
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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. |