原帖由 prozzy 於 2007-5-18 23:05 發表。 5.39.217.76 l8 f- h+ S8 H2 ^
the answer is -$97 for sure. , x# X9 x" h# Q' L
Think about it this way ! I9 i7 c* L% Z; n, z" s L
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
! P9 r/ h, G9 s7 S B A公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... 9 q2 Y" v) }* W5 S3 y' _TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
9 c6 E+ l, X( [; C# B5 ?( ETVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。 公仔箱論壇) G: K; c& @9 K+ x3 o) l
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
% e3 B; z$ j: |" W7 j公仔箱論壇
/ l6 U( n1 F9 [/ t, f6 Q1 Xtvb now,tvbnow,bttvbthink 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.
$ K" I2 Y: G1 s; U+ `4 P7 zTVBNOW 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。
. q, a. C4 Q, A; q- u' _& B公仔箱論壇I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |