原帖由 prozzy 於 2007-5-18 23:05 發表。 
# _: Z2 T2 H( S# _www.tvboxnow.comthe answer is -$97 for sure. & ^3 n$ e! o' P0 x
Think about it this way
2 Z C" [$ D9 o; Rwww.tvboxnow.com1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
; r- U+ Y Z$ t( f4 x! Z' f2) Now, the owner discovered that the 100 bucks is fake. You can th ... + W. R0 N" f# |5 }7 r! Nwww.tvboxnow.comTVBNOW 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。5 R& p: z7 R' w- m9 X1 _ ]
公仔箱論壇) H, M) z( b4 Z' P3 n0 N. Q
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
7 X2 G2 z" Z# _6 bTVBNOW 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。
" r6 S. f% O. `; athink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
6 b3 o' c( m* S' vtvb now,tvbnow,bttvb
! v/ K" q* ?$ x8 _/ U* }www.tvboxnow.comI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |