原帖由 prozzy 於 2007-5-18 23:05 發表。 
- g0 R: @8 {0 v" z8 U; athe answer is -$97 for sure.
+ _# |5 K( O. XTVBNOW 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 this way tvb now,tvbnow,bttvb) X7 A `, {: c' Z- _
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5 d" j) _$ N: i. t& q9 W8 @! b' s
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
- o" f# y4 g r- }( D2 Y% E) Y# S/ X1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
8 v& G& D* a! V, ` rtvb now,tvbnow,bttvb
6 o) j: N( ~/ \# Y) U$ s3 J3 }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 $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
7 d( \1 H$ ?* ?1 pTVBNOW 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。
) g3 k: V6 E2 |5.39.217.76I 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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