原帖由 prozzy 於 2007-5-18 23:05 發表。 
( v+ L" c5 [9 l! f6 S, Mthe answer is -$97 for sure. ) i, Y9 |+ \' N' R& }
Think about it this way 5.39.217.760 \' J3 k: P" f" @
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 [ ?6 b) F( y2 T& | @TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ... 2 z' G# M$ G& n4 }% `& A& i; g2 s
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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 wrongtvb now,tvbnow,bttvb1 |" K5 W* V1 v, {& _8 l
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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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T* j+ m% s6 P. n5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |