原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇1 Q- U3 f" W& `, `; b
the answer is -$97 for sure. 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 z* p2 J- y9 D! O
Think about it this way 公仔箱論壇, q/ f' w7 r; q! `: _0 O Q
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
$ Q% D; p$ [8 k+ t( d' q8 [tvboxnow.com2) Now, the owner discovered that the 100 bucks is fake. You can th ... * w1 L3 ]9 P/ s( x1 z7 v4 x公仔箱論壇
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, g- f X3 k' h; j8 Ptvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvboxnow.com) E" }" `3 m$ ]% m
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& b% j6 I7 X [' T
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. |