原帖由 prozzy 於 2007-5-18 23:05 發表。 ( b0 j3 P: Z" H+ h; c6 c
the answer is -$97 for sure. tvb now,tvbnow,bttvb! [" \- C/ t3 r- \; o
Think about it this way
" q, s2 l7 V% ?: j1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
+ k7 u; v/ V" X2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb M% V) T# n. c0 e; |4 |+ _8 Z/ H5 J
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。. ~, c) Z5 D" I& b* [3 l
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1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
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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.os.tvboxnow.com3 x0 }, X! ^5 }0 l; f
4 u& ?) i/ Q: c6 f6 j" C9 HTVBNOW 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。I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |