原帖由 prozzy 於 2007-5-18 23:05 發表。 tvb now,tvbnow,bttvb" v, ?% x$ Q( Z1 P+ a6 @
the answer is -$97 for sure.
0 @, L- f" p& r% d V3 DTVBNOW 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。Think about it this way
. [" [! m& B! b& n* h" B8 a1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
9 a. T/ ^* g- ]/ e. q9 i8 v& ^2) Now, the owner discovered that the 100 bucks is fake. You can th ... ! E3 o M0 t1 l' n6 }% {; F
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( s+ {' }! J% d; U公仔箱論壇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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" f; Q3 f! i7 Rtvb now,tvbnow,bttvbthink 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.
? Y+ h1 g* O1 \: s, o6 r* X5 T: X5.39.217.77:8898 & h; j. G1 Q7 {3 O8 n( B9 I
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |