原帖由 prozzy 於 2007-5-18 23:05 發表。 5.39.217.76& u' e5 d' p+ T) x; z5 ]
the answer is -$97 for sure. 5.39.217.766 C( @8 _! E' z9 k: m2 Z& u# ]& D
Think about it this way
) W, v" w$ W B. Z$ C7 i! G7 y1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
. `% h' S/ z$ f3 y# c9 f1 `$ Ytvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... 公仔箱論壇3 {# z( [% b/ W9 E9 W) x! D: P$ J0 i
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% n% w0 d8 N! j. R1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
* r8 A* V9 ^" w- o4 U" {4 {tvb now,tvbnow,bttvb
2 Y2 A: q. U' D5 ~2 ^6 L1 `' q6 o# l5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。$ Q1 p( d: {9 R6 V' {
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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. |