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。; c" T" w @$ ?* N1 E1 G3 U+ m K
the answer is -$97 for sure.
1 a! D9 w4 n C/ c/ S1 _6 d+ fThink about it this way
8 t* u* u3 v7 V( y. H: d( OTVBNOW 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)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。, P) g- e. F7 }
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 公仔箱論壇& _5 B" @! w6 Y M
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5.39.217.762 K! }) i# s; k U D
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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% p5 O8 v% a1 C/ R! N7 o+ q4 w5.39.217.76think 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.! ]- a& A8 u# j& Z8 G& L8 L
9 {6 G8 ]9 o9 k1 y5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |