原帖由 prozzy 於 2007-5-18 23:05 發表。 5.39.217.764 c3 {8 C& R; h/ N) P/ N
the answer is -$97 for sure. + X( P5 k# r3 J, F& S/ j8 J; d s
Think about it this way
5 r2 w7 Y' p, A2 G' t公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
, b0 @5 w/ ]0 j! z: X2) Now, the owner discovered that the 100 bucks is fake. You can th ... 公仔箱論壇6 T" @8 z# Z9 j7 }8 F2 h3 _* v7 W
2 @& t! ?1 S4 C7 R$ i) l# A 5.39.217.76# K3 I( _+ I. D$ Y3 r+ |
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongTVBNOW 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。# ^7 P- M. X* i' r
) G* R1 e# z% W1 F4 p" O! bthink 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.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 L- ?* z" T# m
% ^7 g* l0 d* O& ~# r- R' Z% i* W6 ETVBNOW 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。I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |