原帖由 prozzy 於 2007-5-18 23:05 發表。  ; t5 P% R D8 s* G) ^- S4 O& Z
the answer is -$97 for sure.
/ D4 @/ n( Z! y3 K$ r: `公仔箱論壇Think about it this way
0 N* L3 o- m5 \, [" v! |. m# S; VTVBNOW 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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
( y: W, m/ Q! P2 `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公仔箱論壇3 Y; d; o7 j* [' @( m" X# {
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。8 t9 I2 t# H6 s3 F' k/ b6 j/ G
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5 S0 A; U# U5 }1 b b6 P
, X: \3 B8 g" n9 v& p) F* atvb now,tvbnow,bttvbI 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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