原帖由 prozzy 於 2007-5-18 23:05 發表。  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。* a1 [4 }" T7 y) W# |( ?% @
the answer is -$97 for sure. + v7 A" I- E" ^7 X& R! Q
Think about it this way
7 @$ i8 m, G& s1 F3 T; D0 xtvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
0 S7 a) l1 E0 w. B( O2 C2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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0 D6 o+ z7 d5 y' F" E# r1) 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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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.
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8 Y5 x! ~( A; z2 `6 j/ ^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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