原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇; q" \3 ~2 b3 v
the answer is -$97 for sure.
) Y1 Q6 N, L- ^& p! `2 J5.39.217.76Think about it this way tvb now,tvbnow,bttvb. o1 m8 q* q m! `- @8 P' R3 _
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
2 r, A: Y) R' [ ~8 F. b/ [2 x2) Now, the owner discovered that the 100 bucks is fake. You can th ... 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。1 n8 c% ^0 y9 U% C) l& U- O# x
' t# a, \; Q3 f# }9 D3 k公仔箱論壇 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。, ~6 M% T" a& W1 i; {
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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* a4 L* p5 X3 Q. x# K& b! Ethink 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.
6 C% d* h2 z3 l0 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 ?: l5 g4 X( R5 g
I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |