skybirds

原帖由 prozzy 於 2007-5-18 23:05 發表。 % `/ s3 U2 U0 [& F
the answer is -$97 for sure. tvb now,tvbnow,bttvb/ M# Q# w9 }. g) y5 ^& |! L
Think about it this way 5.39.217.76$ B) d4 _3 p2 u* U8 e
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)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。, o- J8 H6 i+ J& N& {
2) Now, the owner discovered that the 100 bucks is fake. You can th ...

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, \( g3 i& h; L) d; Z; X. f+ z3 L5 s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 wrong5.39.217.761 A+ R% {: R. C6 v" J/ w3 v

) x: Y" m. }0 u% ~5.39.217.76think 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.
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! M" G. [1 S* O1 t) P# iI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong.

skybirds

??? 369258 ? 2007-6-28 23:29 ??? tvb now,tvbnow,bttvb! f( l! @0 ^4 G

$ N# d3 F1 e8 D. Q& s9 f+ \1 L- ?* @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。& F* l7 S/ D+ a) x! ^
dun forget that guy, not only the $18 dollars product he got on hand, he also got $79 dollars on this hand, he paid a fake 100 dollars bill, it means he paid nothing, and the boss gets nothing too, so u need to add 79 dollars to the total.

230km/hr

97

joey80

179+18tvb now,tvbnow,bttvb/ {% Q  h6 Q; b5 z8 Y# G/ v8 y

, F. y  a  M2 W. w6 t$ Y! e0 M5 c公仔箱論壇[ 本帖最後由 joey80 於 2007-7-11 07:08 AM 編輯 ]

skydn

118

mkcjojo

??

fisherdai

18+79=97

wuchingching

not 97 ma ?

mibird

197

kent8118

Thanks for sharing!!!