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。5 @1 C& g5 z) S! W
the answer is -$97 for sure.
! Q) h4 N& f3 s- w8 S4 M& M/ A: D9 Gtvb now,tvbnow,bttvbThink about it this way
" O! n7 c1 H" `0 P7 G8 S5.39.217.761) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
6 V4 K1 [% z' l& lTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ... : _$ h9 k5 ` {; x# q( S$ Gtvb now,tvbnow,bttvb
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" B, r1 ]7 @8 O4 u/ p$ Q; D1) 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: @: o/ S. z: W5 R5 z& X, H" F7 ]
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。$ K& Q/ g2 b& j; L
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. |