原帖由 prozzy 於 2007-5-18 23:05 發表。 
: y3 q P6 A! {7 [( A' Kthe answer is -$97 for sure.
' E6 A7 h) {* d( E/ l5.39.217.77Think about it this way
a3 o: N2 x2 S' h2 z& }- cTVBNOW 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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
7 Y9 |6 ]: [0 [. k0 ^7 _/ `6 G" ETVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。2) Now, the owner discovered that the 100 bucks is fake. You can th ... tvb now,tvbnow,bttvb% U& k& f$ [- [& J
tvb now,tvbnow,bttvb/ e6 E. |8 Y. ^
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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
6 s8 p- F, L' G5.39.217.77
" V3 y1 }' |! e$ k: Qthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.5.39.217.779 t) r* c" n; v: p2 Q
6 B/ o0 `3 @$ R WI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |