原帖由 prozzy 於 2007-5-18 23:05 發表。 7 p- r4 \0 Z/ g" J+ o% u
the answer is -$97 for sure. 公仔箱論壇. f. ?9 ?. R: T7 l) H
Think about it this way
9 }/ y0 i1 e7 i2 Y4 e" QTVBNOW 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-$18) P* K# p- k1 q3 P& f% }
2) Now, the owner discovered that the 100 bucks is fake. You can th ... k0 ]/ U) C0 H* X, I9 C( l5.39.217.76
5 Y9 G( I* m* O% `# e! c9 MTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。 TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。7 [" ^* x+ t3 @2 |: F
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb/ A$ I+ o- w6 L3 i0 l0 w
/ W' Y$ J. v4 L5.39.217.76think 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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I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |