原帖由 prozzy 於 2007-5-18 23:05 發表。  www1.tvboxnow.com" n3 L( m2 B, E
the answer is -$97 for sure.
4 f5 P2 O+ R+ G9 Dwww1.tvboxnow.comThink about it this way
7 h: v2 x5 S# b& S, Wwww1.tvboxnow.com1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)www1.tvboxnow.com* x# ^% |/ U5 T: d3 r8 y) d
2) 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
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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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9 u( \1 C' X9 _www1.tvboxnow.comI 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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