原帖由 prozzy 於 2007-5-18 23:05 發表。 
' B% g* O0 a/ y+ L4 k- q3 athe answer is -$97 for sure. www3.tvboxnow.com6 \1 p7 }9 p1 X& M
Think about it this way / M- j: Z- O& s" t$ |( W
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* ]1 r/ f% @$ K2) Now, the owner discovered that the 100 bucks is fake. You can th ...
! @% J% @# p6 \! p& utvb now,tvbnow,bttvb tvb now,tvbnow,bttvb+ n8 `, U2 v- v4 X$ B- ]
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇% T% n6 s6 T2 F% {( s$ \, U+ H
% t/ Q( b9 Q1 W& l8 Wwww3.tvboxnow.comthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
; b7 ^! M) s6 V& u i. f% h公仔箱論壇
* r4 L) a3 p7 I9 J- W$ ntvb 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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