原帖由 prozzy 於 2007-5-18 23:05 發表。 8 u2 z, H, r- `+ q* e- ^! z( T
the answer is -$97 for sure.
, n0 c' |2 b1 x) `" 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。Think about it this way
5 U% r" n. {' K Q. q! i1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。8 b4 m$ n; J8 W
2) Now, the owner discovered that the 100 bucks is fake. You can th ... $ C+ s: ~$ U( [5 w4 O) ^+ J
: O0 Y! n1 v2 Q' e9 U% Y- ^公仔箱論壇 5.39.217.76& C) a( b ~* w+ t6 S
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
7 B# s0 f X5 u1 U& MTVBNOW 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。
6 z/ Q' D3 G1 _, W: a1 Qthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.tvb now,tvbnow,bttvb$ O9 _$ a/ ^. A0 o
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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. |