原帖由 prozzy 於 2007-5-18 23:05 發表。 
3 I' ?2 _ s' T2 U L9 Jthe answer is -$97 for sure.
( p& O: U( j" {6 j: ]8 M% d公仔箱論壇Think about it this way
" J4 ~( p% G- W& a1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
3 R( }+ `2 c7 R _1 L% YTVBNOW 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 ... - g! D/ J1 F: ~3 u% n
/ U4 Z5 K6 {8 M1 G 公仔箱論壇. B ]1 {" h4 A0 g1 H: ]/ y5 Y
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
1 v3 O1 _' S, Utvb now,tvbnow,bttvb ; B5 @& s4 x. O9 R, o6 h( I% W( Z2 x
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。8 g& z8 q+ a6 N' R$ ?
1 i# l' k! }5 t2 v& ytvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |