原帖由 prozzy 於 2007-5-18 23:05 發表。 % |% }+ w/ g+ M- p2 @6 q6 b9 }
the answer is -$97 for sure. www2.tvboxnow.com9 \4 @ [- O- L1 F4 ]- U
Think about it this way
% W4 b! m# i6 C! i/ E* [tvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* I" {8 z+ N3 I4 WTVBNOW 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 ... 6 x P( c& P7 C: u( W# C
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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
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/ V9 i, J1 {4 D) D2 p+ z8 L% J8 ^公仔箱論壇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.
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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. |