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。" p3 P3 }1 e, ~/ P3 j
the answer is -$97 for sure.
' D5 d6 g \( X# C1 Rtvb now,tvbnow,bttvbThink about it this way 5.39.217.76' A# \* [/ G4 j9 P
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)tvb now,tvbnow,bttvb' r: A2 K3 \7 n+ ~
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 8 h# I, U. |" o4 a5 j# q5 G, m公仔箱論壇
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2 W& S4 ?; G% y4 y3 N0 c1 Z5 d$ ktvb now,tvbnow,bttvb1) 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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) c1 A& ?' e8 m/ bthink 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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- W* I4 b& r% S% l: r3 WI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |