原帖由 prozzy 於 2007-5-18 23:05 發表。 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。& W& W S7 v! e! I. H
the answer is -$97 for sure. 公仔箱論壇3 O' F0 m9 h8 g+ R' @) O
Think about it this way 公仔箱論壇$ W/ E& o: ^% [
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
5 z* _, `$ m- b5 F( C8 J4 l5.39.217.772) Now, the owner discovered that the 100 bucks is fake. You can th ... # m0 X' R- W5 V( C! u
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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。3 A% }, X5 _( B( ?" X
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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4 K3 y" o" L% y: N$ S8 L7 Y$ {& {tvb now,tvbnow,bttvbthink 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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: ~6 c- G- n) bI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |