原帖由 prozzy 於 2007-5-18 23:05 發表。  公仔箱論壇6 w& E6 K( K) B$ h3 G3 R3 z
the answer is -$97 for sure. " |* y, Q8 j( O9 @1 y
Think about it this way
8 C6 U) J4 u" F5 _1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.77:88989 H8 l$ s& L* W& c# c
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
6 C- H8 K) I3 L3 `$ B( Q$ v9 B公仔箱論壇
9 ~8 @8 L5 ^0 ^( v, J* |think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
; }' u' v6 m( D7 Y6 }9 |$ ptvb now,tvbnow,bttvb
) b0 o3 N$ X7 D8 bI 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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