原帖由 prozzy 於 2007-5-18 23:05 發表。  公仔箱論壇) U; r% S7 t: B* ?8 ]8 Z, l2 b7 I
the answer is -$97 for sure. 5.39.217.76# Y9 T* H2 g' f4 j* U
Think about it this way
$ O( w3 t) ]4 K' \! ]5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb( n; A. u" n6 l2 j3 E( x
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
; i2 Q; e1 b2 ~tvb now,tvbnow,bttvb 5.39.217.764 A% `. x8 W' K: ~+ y, |
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongTVBNOW 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。( @0 F7 k: b Y5 B* F* O! ]9 Y
$ ^0 v% {: U O7 g- E$ U0 t) u1 |" |7 {! {5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.公仔箱論壇9 G* L% @/ c. P0 J7 g) T% O
% M7 z$ T% W* T5.39.217.76I 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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