原帖由 prozzy 於 2007-5-18 23:05 發表。 " g; C* W" g; D: q& ~) Q" g
the answer is -$97 for sure. tvb now,tvbnow,bttvb# H0 S; \$ @! T" O5 t
Think about it this way / N. J2 `4 S; N7 G! K9 ]& W! n8 r
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
) F1 g7 Y( E" K8 h. ? r; V6 Z5.39.217.762) Now, the owner discovered that the 100 bucks is fake. You can th ... 6 e% u7 }6 O9 K8 E. r: L5 n; Q! n3 f& A b$ S& |& E. Q) B
* i1 b! V' l" WTVBNOW 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) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
8 k6 b1 o/ h0 m* g$ ?7 n
* [! \$ F2 L) j2 t: M5.39.217.76think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
" i" {) A; T5 N( F$ @8 xTVBNOW 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。
$ z- p3 N5 p5 r& c! stvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |