skybirds

原帖由 prozzy 於 2007-5-18 23:05 發表。 & ]: O" j& o4 \& ]
the answer is -$97 for sure.
, H( v2 F- l' R& J- h& x: Ktvb now,tvbnow,bttvbThink about it this way ' ?# h4 t7 W4 Z5 |4 O2 f
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 i" _8 D" b0 }- r/ C: j# O" y5 U$ R公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ...

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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
% }, m4 W- V$ s( g# Z) Vtvb now,tvbnow,bttvb 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。1 ^8 Y) W3 r' \- ?
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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I 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 ??? 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。7 S' I  M/ X, u

0 H4 x, z9 N) ~5 G6 UTVBNOW 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。os.tvboxnow.com% r" t; p: `1 ]7 K! b7 Q
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

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' |% z' f* E1 u9 M[ 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!!!