原帖由 prozzy 於 2007-5-18 23:05 發表。 
) C3 h4 w/ o6 h5.39.217.76the answer is -$97 for sure. 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。' h7 w- v1 p! Y: G, n: S# [( k
Think about it this way tvb now,tvbnow,bttvb u* J5 I! y( g, G6 B
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
/ o) j4 ]; G r: l& l7 m) etvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... * @- C: U! T6 M' A/ m
TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。7 Y9 z9 y: R, I
# P3 a' w$ W- _7 o% i' J1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇! d* @7 H) A% e* X- X
5.39.217.769 B8 S$ n2 n% I5 F2 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.
2 m# C" {# Z. R, WTVBNOW 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。
9 D- q! a( i9 C, n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. |