原帖由 prozzy 於 2007-5-18 23:05 發表。 
. ^: `1 I' ?% I$ f% s# }8 H- X8 H5.39.217.76the answer is -$97 for sure.
* h% c& ?3 c4 E5.39.217.76Think about it this way
7 j4 o( u+ R" `tvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
+ r- R& A, ~* ~) X5.39.217.762) Now, the owner discovered that the 100 bucks is fake. You can th ...
公仔箱論壇" V# U3 R% |4 T
5 Y/ t6 m$ I |9 z. mtvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
4 E4 Z7 q! l& Q4 Q' otvb now,tvbnow,bttvb
# l3 H( o1 U3 P; C- E+ y/ JTVBNOW 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.
* P y: Y% Z" E& h公仔箱論壇
! S) n; f5 p6 G% lI 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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