原帖由 prozzy 於 2007-5-18 23:05 發表。  & k% q/ c4 J4 S% T0 X) G. U
the answer is -$97 for sure. ; l1 a% b( {$ ?6 d% z$ V
Think about it this way
7 O/ n6 Y t( A+ _* k& I1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
4 o6 P ~. x, m0 `5.39.217.762) Now, the owner discovered that the 100 bucks is fake. You can th ...
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
4 d. \/ G9 r7 q, o8 B5.39.217.76
9 a7 s4 _; i0 `4 J& p" e2 _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.5.39.217.76) A# I# w% {% T3 k0 r
9 c* `* J+ N' \. OTVBNOW 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。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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