原帖由 prozzy 於 2007-5-18 23:05 發表。 
0 f9 \6 K2 {/ i2 K5.39.217.76the answer is -$97 for sure.
6 w, h# D: D# C1 x& r公仔箱論壇Think about it this way 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 u3 x2 e; q* W: Q" n, C
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)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。' H# z# q& m7 A# M0 p
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 2 o2 U; i2 O3 S+ ]/ `! T4 I
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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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.
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I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |