原帖由 prozzy 於 2007-5-18 23:05 發表。 
_% M( O3 ?' T& S7 ] z2 r/ C2 @the answer is -$97 for sure. x: S' ^ D s2 G7 {; ~" R
Think about it this way 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。& F7 Z1 a0 G; P4 n9 X7 Z& ?( u
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18): X) a. K7 ?* }0 ~' l, N6 |
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 2 U. c ~, R/ Y$ G' z0 N8 V( W8 B' j- t: p2 F E# P! H
5 l$ V/ |# L I
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
3 ^5 w' x+ c6 L5 [0 l/ _公仔箱論壇
2 E# a# F5 h* t- Z5.39.217.76think 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.& [( e. E' V5 J! k/ P; b1 w
公仔箱論壇 S& I" `& c6 M: {& S
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |