原帖由 prozzy 於 2007-5-18 23:05 發表。  tvb now,tvbnow,bttvb* v1 H% y+ n* ]6 q/ ?
the answer is -$97 for sure.
; c7 W P7 ^# X6 Mtvb now,tvbnow,bttvbThink about it this way 0 y, T- V9 S" ~+ t
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.762 ?1 r$ q) p5 I
2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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& D6 W; p" y- W! z5 U1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.760 X& A6 m( h) Q& ^8 t p8 q) `
tvb now,tvbnow,bttvb& L% J5 A( L6 l8 _% j1 m. W" j
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。 I' y' ?, w1 |6 X( H3 |
c C5 v; Y+ ~* Ftvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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