原帖由 prozzy 於 2007-5-18 23:05 發表。 9 {& i- e' H% w
the answer is -$97 for sure. tvb now,tvbnow,bttvb' V+ X7 h4 E% p- a$ X) O1 S
Think about it this way tvb now,tvbnow,bttvb( |; H5 Z" x: ^4 x
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb4 t' k, x% k. j7 Q; P T
2) Now, the owner discovered that the 100 bucks is fake. You can th ... TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。4 H6 \- c/ W6 M. S4 S$ R' g% w; I/ n' B
5 D* C" Z4 m) B2 W, G/ J! s+ dTVBNOW 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。
: i7 U7 x- n6 \2 o; v5.39.217.761) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
1 k7 ~9 J9 }6 u1 |tvb now,tvbnow,bttvb
! A% c5 @0 u3 `3 H$ A2 q7 F9 x. Vthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
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3 o+ j7 j# C$ Q5 P S4 D公仔箱論壇I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |