原帖由 prozzy 於 2007-5-18 23:05 發表。  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。- I) X6 u; W1 R* K w2 S
the answer is -$97 for sure. www3.tvboxnow.com$ Y7 j8 @* ? G' p4 F
Think about it this way
3 n/ a l/ C' _6 b( Y0 [) I9 {1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
T' _* O+ L9 }公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ...
公仔箱論壇7 E. Z8 F$ m9 @) E5 a5 f
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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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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" b5 a+ v& r- S6 o8 ZI 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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