原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb# x$ `7 W7 E/ P' |6 U
the answer is -$97 for sure. 1 S% t, R5 _/ C6 l4 w
Think about it this way
, i% W3 Q, ~ o' v$ k) k ATVBNOW 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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)* U3 n& L9 x+ {9 p- |$ j+ Y
2) Now, the owner discovered that the 100 bucks is fake. You can th ... - l3 U- e; O% b" T5.39.217.76TVBNOW 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。* @+ K4 L( |+ g4 S8 v' y
4 e/ ]- z4 t" k# V* h2 w. E1) 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- g- A% u2 W8 {2 K2 R
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think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.tvb now,tvbnow,bttvb; |/ ~, p) Z( c/ @. L) Y9 ~$ E$ J# ]& f
' Z. s! z0 p' L5 E: f; L5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |