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。: Y7 ^' N: R/ S g
the answer is -$97 for sure.
, \3 {7 M* q3 ]- d- U- Atvb now,tvbnow,bttvbThink about it this way - ]* N, U0 m3 ?* a: {
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
1 `3 r% }2 i6 i3 `, h' y2) Now, the owner discovered that the 100 bucks is fake. You can th ...
) i/ `. P9 c/ p, ytvb now,tvbnow,bttvb1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb" s3 K" l- h6 S. H2 [+ s% S5 v- L
/ C4 t! U" L; P5.39.217.77:8898think 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.3 x N* P- B3 O
- |1 L" w( E7 g- x; C6 e5 e W. etvb 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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