原帖由 prozzy 於 2007-5-18 23:05 發表。  , J+ `+ m6 u' K k2 k% N$ @
the answer is -$97 for sure. . v( h* C# H9 R2 s
Think about it this way
$ {9 }9 f9 N# q/ d, K2 @6 e- C1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
3 b, {/ J, g7 n" g5 q0 \: l# ~, b$ V; Atvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
5.39.217.762 i. B/ p, x5 J% r) r8 W
$ }1 y: h) F( R- g公仔箱論壇1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.769 ?7 Z/ O1 D# u4 y0 y: B
tvb now,tvbnow,bttvb: y5 p% y5 n9 v9 t
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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, a" l' u% s; M, Ctvb now,tvbnow,bttvbI 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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