原帖由 prozzy 於 2007-5-18 23:05 發表。 
0 S) O. f5 K2 K" q4 bTVBNOW 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。the answer is -$97 for sure.
' X! a4 E6 U, e9 w- Y- XThink about it this way ) X$ U* `; Z; b1 K1 y& F
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
' h2 ]- d( z. C7 d! ?2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb, G6 @% E+ F, @! v, ]+ z' f
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& g9 s @+ A$ {" `2 g" ^1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong9 Z6 G8 x% y/ y( f
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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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0 k t9 _, w9 x6 j S6 W: F& j5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |