原帖由 prozzy 於 2007-5-18 23:05 發表。 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。& o7 n9 A+ ?# |
the answer is -$97 for sure. % d' u( i3 A3 u# b: q7 A4 W/ V% ]
Think about it this way
/ m+ [8 S. q3 [ ~9 y! S0 w, ?公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
. s6 R6 w; y3 B3 S* e! p2) Now, the owner discovered that the 100 bucks is fake. You can th ... 公仔箱論壇$ f5 @/ v! _7 t% _
公仔箱論壇8 Y7 ]2 Y1 a. P" C1 @4 _
" T$ T) d8 D! \, ^( R) wTVBNOW 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) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.76! X1 p) S( J7 z$ B
+ `6 O* `0 G/ C# _, g1 cTVBNOW 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, 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 f5 v5 a* U, p! {4 K( g I) s
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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. |