原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb! B8 _, ?3 @% F6 k
the answer is -$97 for sure.
8 n" U' x1 ~# m8 R& sTVBNOW 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 this way
! r5 \3 Y' K: A3 {% l, d5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)8 D3 ?+ p6 w( ]! S" p$ J( X0 z
2) Now, the owner discovered that the 100 bucks is fake. You can th ... + g( J; s$ s% v9 W) z
. \$ q9 _0 t0 l& s* {; q5 H* N5.39.217.76
( h0 U2 \8 u1 b8 r3 ~9 h+ i! C, i! _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。1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong公仔箱論壇! \! p$ n" n. G
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think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。& S# N. X- R* _% x$ y7 c2 B
公仔箱論壇4 x, D' u0 @, J$ t
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |