原帖由 prozzy 於 2007-5-18 23:05 發表。  5.39.217.76; f7 x0 ~5 ]0 w9 |& D5 Y. K
the answer is -$97 for sure.
1 T2 j! h# S% _tvb now,tvbnow,bttvbThink about it this way " s" w+ B3 U7 ^, X+ {3 A) J8 H
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
# n; v" C; M% ^( r2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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& M7 U7 i- G: q/ _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。1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
3 z) ^5 [' c. {0 j, d) r* Ytvb now,tvbnow,bttvb
2 D* O: s) V, F- k- S5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
& ~1 C* J4 f( Y9 g9 W$ dTVBNOW 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。 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。2 E+ T. H7 ^6 ?8 h* p' a9 n$ J
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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