原帖由 prozzy 於 2007-5-18 23:05 發表。 
* n/ f) f+ q0 D! Q8 ~9 E2 gthe answer is -$97 for sure.
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1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)公仔箱論壇. U4 m/ p2 m! H$ N5 ~
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
, F$ G! P0 x/ `; T5.39.217.761) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong3 ]4 U3 R/ |- H
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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.公仔箱論壇8 c Y9 \. R- M
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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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