原帖由 prozzy 於 2007-5-18 23:05 發表。  公仔箱論壇% c8 L( {2 k, x2 Y d, T. _8 R: y
the answer is -$97 for sure. 2 \, j( t3 Y! j9 _; N
Think about it this way
9 Y l+ r8 C$ V, utvb now,tvbnow,bttvb1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 Q/ Y. K- _# p+ h0 m! r4 Q2) Now, the owner discovered that the 100 bucks is fake. You can th ...
& r! z. V& L2 G( C2 h公仔箱論壇
" x' Q' k0 ]* t6 R. n: htvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
1 M' z8 p- R K# T) d2 qos.tvboxnow.com 公仔箱論壇6 N5 I, E6 {4 o$ J- T6 a7 w
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.
4 e) j4 q; R9 F* @4 Kos.tvboxnow.com
U: ?& l6 f { V/ P. w公仔箱論壇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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