原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb( E, \) v& e r! B( Y* ]+ j
the answer is -$97 for sure.
5 t6 ]8 E. ~$ `7 t3 Y% \* `公仔箱論壇Think about it this way
6 g( b( y9 @1 V" h. d$ g C u公仔箱論壇1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)5.39.217.769 N d5 m2 R4 Q/ b& C# L
2) Now, the owner discovered that the 100 bucks is fake. You can th ... 公仔箱論壇) _& W! s1 q. |: n9 J) S1 H3 a
' U- a+ ^* k3 `! I% F3 ^ 5.39.217.76. l) U$ s& U9 A
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
5 }5 u! }2 c- F0 [4 ]; jTVBNOW 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。
7 O) j" o5 K; i5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
4 t8 Q2 a3 S$ `7 U5.39.217.76
. C5 G- ?0 c7 f0 x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. |