原帖由 prozzy 於 2007-5-18 23:05 發表。 
5 B ^% s9 M& D7 N0 _, a' Athe answer is -$97 for sure.
4 V) o& d' b4 p& A- D/ C. h公仔箱論壇Think about it this way
* o: {+ Y- u% J- D; i/ e$ l1 a+ S9 ]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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
/ S4 Y: M2 I; T# M3 l; f3 [% F) a; Z公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... 8 {. r% V; r1 g0 r6 U, z5.39.217.76
9 \& i. i$ L+ j# x G; \5 T3 l6 qtvb now,tvbnow,bttvb
* r, K9 X7 V' c& R( Q9 Mtvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
( T1 ` s9 K4 ?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。
4 P) k$ o; B0 @tvb now,tvbnow,bttvbthink 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.. n o- p) \6 b
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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. |