原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb% C1 X/ w+ R5 x9 K! e
the answer is -$97 for sure. ; o% O. a( K5 {
Think about it this way tvb now,tvbnow,bttvb! q; G3 Y. V; c! r5 {3 W
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
9 L" j0 |' j1 i公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... - H P) e- A# x3 [; k b0 ?公仔箱論壇
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8 r8 [4 ?' a, O8 lTVBNOW 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 wrong公仔箱論壇3 `# q( M7 T( A I3 u& `1 V
1 i2 E7 @7 l; w7 Z; R公仔箱論壇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.
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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. |