原帖由 prozzy 於 2007-5-18 23:05 發表。  9 F$ i8 Z8 ]5 |; ] }
the answer is -$97 for sure. 4 A" g; [4 f3 ?2 O
Think about it this way , t) a0 \% j, {
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
2 K- W, Z. w* N6 a- Btvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
+ s7 F7 B, ^& n3 Y9 G; e5.39.217.76
; b; z" K9 @6 T8 o1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
( R6 a3 k* Y7 `& _! f1 i5.39.217.76
/ y( o) M6 J5 t- k- vthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.$ \. k$ K5 \; D2 k7 ]
! E) Y h; V( o( F% rI 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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