原帖由 prozzy 於 2007-5-18 23:05 發表。  5.39.217.766 L, c- A# }) I( ?- y1 C# |
the answer is -$97 for sure. 1 @0 Q r2 A# \3 i w
Think about it this way tvb now,tvbnow,bttvb& F# E- H, u8 w3 f8 N
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* P. z2 e7 l+ r4 I3 g2 }TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2) 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 wrong9 N+ ~7 u" \7 x5 w
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。1 O) V/ i, x( ^1 R+ h, o
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.& W& i% w) l7 ~" n, ~- `8 S
tvb now,tvbnow,bttvb0 E+ S! O8 X1 I& D+ T
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 2007-4-9 06:27 PM
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