原帖由 prozzy 於 2007-5-18 23:05 發表。 
5 `7 O) }$ x% D* u1 |* FTVBNOW 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。the answer is -$97 for sure. tvb now,tvbnow,bttvb- n( ]% _2 `- I% t! C4 o+ j% X
Think about it this way
- Z5 `6 q, R7 |2 U/ w. W4 f' D h1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
$ T5 o: b6 y1 v) vTVBNOW 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。2) Now, the owner discovered that the 100 bucks is fake. You can th ... / N" n( y- ?7 ?' r e公仔箱論壇tvb now,tvbnow,bttvb! `0 r* f( B4 j
& V' M S2 z) ]# n0 ~0 o8 `5.39.217.761) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
: X7 d9 q4 ~- Y Q% y Q; e公仔箱論壇 5.39.217.76; z1 R6 L, t! E( B- u/ Y$ b
think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
, s4 x8 R* n( T* ]) t1 o, c% o公仔箱論壇 3 {$ s6 _5 f4 N# I* ~" G
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |