原帖由 prozzy 於 2007-5-18 23:05 發表。 
# k" S- |8 r3 Z- X8 R- M5.39.217.76the answer is -$97 for sure.
' P) K! N9 l/ J( @( s- ?. d! cThink about it this way
2 R2 r$ H" f& u0 n( X0 a( \8 n) W1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
! T3 o4 W2 F m$ D; p! M3 f- b8 @tvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
! I3 R* K1 B5 Z5 X: ATVBNOW 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。
! ^ C6 U$ H3 U公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.763 n1 V/ {* o0 ^" D# d4 a
5 G: a9 Z# L$ V, I# @' s6 Z4 yTVBNOW 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 $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.公仔箱論壇, _: K" `/ r$ D) s
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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. |
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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