原帖由 prozzy 於 2007-5-18 23:05 發表。 
. \3 N6 d; ~( X' g/ s% z& e9 Wtvb now,tvbnow,bttvbthe answer is -$97 for sure. & Z/ D( m! Y7 @
Think about it this way
4 }& u5 H. u) M6 a5.39.217.771) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
: r o( N$ y" otvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
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. K- g+ Q2 y3 w% p& a9 c7 A/ m5.39.217.771) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
& b6 L5 o. w- r, \9 k5 M5.39.217.77
4 T- q; @$ _- c3 c2 p6 ]5.39.217.77think 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.公仔箱論壇' H& W8 V# w* n5 _0 | R, ]8 T
5.39.217.771 s- E& M/ Q7 z+ a# @
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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