原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇) q. l P g* ^2 e0 T0 m
the answer is -$97 for sure.
/ U! \/ U$ H0 p5 }4 j oTVBNOW 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。Think about it this way 5.39.217.77:8898! a. m4 l+ b+ f* g3 g; H! P
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
6 E- X' y, k, a5 {7 Btvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... 6 K$ V+ k. q# V9 ]! L公仔箱論壇5.39.217.77:88989 b# A( ?( m# ^0 r# g! a1 X
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrongtvb now,tvbnow,bttvb6 z$ I+ z1 P7 r8 y$ Y, l6 R" U6 F
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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.tvb now,tvbnow,bttvb1 ?! L5 j" f0 i3 s5 s1 @
8 R! [" t7 {, r/ F5.39.217.77:8898I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |