原帖由 prozzy 於 2007-5-18 23:05 發表。 
- M% Y" a5 Q5 t9 L3 j5.39.217.76the answer is -$97 for sure. / u4 T' _: S6 G9 V. g) H: T
Think about it this way
6 W% C7 c6 n4 ] z5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb, m# k) j3 C0 N8 C5 V$ p8 ]
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
; p# G, s, q. D$ m5 ITVBNOW 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。 4 M3 Z4 V* ^. ?5 M9 f
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
1 j# c3 Q% E3 e6 h% r- _- A+ i$ |5 o5.39.217.76
8 l. X1 @8 C t" U) a4 H# U7 a2 `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。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.tvb now,tvbnow,bttvb: y0 g& T; R; ^2 I% G' J
5.39.217.76 m: d. Z, p9 s) J2 N9 r2 A; ^3 D
I 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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