原帖由 prozzy 於 2007-5-18 23:05 發表。 
+ X3 [% B0 V W& f" ptvb now,tvbnow,bttvbthe answer is -$97 for sure. 2 z3 o" Q# m3 S% w8 [" |& |6 h
Think about it this way
% a+ S3 ^: U' g, `7 K- e公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
' Y3 }$ G$ g7 g5 v) o2) 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
( z9 x% ^% A# P2 u1 I5.39.217.77:8898
+ J, k, ]- p5 J( C4 m1 s4 Q: X6 N5.39.217.77:8898think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.公仔箱論壇$ ^" u: i3 l3 f
公仔箱論壇/ H* H! z# j! V
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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