原帖由 prozzy 於 2007-5-18 23:05 發表。 
( e& ~" |1 i8 A8 |3 B1 W, Dthe answer is -$97 for sure. 公仔箱論壇" {0 o" ?/ s ^8 R- i6 U: F8 k4 \
Think about it this way
) b4 M( [7 A0 b# y1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇6 Y& V8 H/ t' }! j3 Q" V) E
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
0 }% W9 z9 q4 l' W! `# z5 D2 l; ^4 P8 lTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
' i) ~ k) S9 S/ C n1 u+ K( l公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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- x/ L3 E& D7 P+ |; d$ O2 K& Ttvb now,tvbnow,bttvbthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
7 A) a" i1 {8 ^4 S$ O8 y) `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。
6 I3 E! E4 Q4 a3 M+ e% K% S' AI 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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