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。) o6 i C9 p5 a5 p N3 G
the answer is -$97 for sure. - a% o% C; G+ }2 O2 O* M, T' f$ Y
Think about it this way www2.tvboxnow.com2 o1 l$ j$ l; n
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。 H5 B" M- h( s- i1 H' x
2) Now, the owner discovered that the 100 bucks is fake. You can th ... ( f0 j- [. C. P4 M. ?. m9 [( C公仔箱論壇
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb9 z" A% d3 ]9 z9 k. M! l+ D
, h$ g$ S6 ^# [0 P# ITVBNOW 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。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. |