原帖由 prozzy 於 2007-5-18 23:05 發表。 " W9 l% H1 U& {5 ^+ a
the answer is -$97 for sure.
) ^! N1 T7 ` I t5 xtvb now,tvbnow,bttvbThink about it this way ; A w- Z4 C {
1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
9 `0 q; W7 l2 z# @8 Q+ a C3 G) {tvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ... 7 b. P2 g3 g3 N9 X" ?5 s* c0 l5.39.217.765.39.217.76 F6 h% z: u7 K @2 E, K1 g# W
1 y, R0 W6 S, z) v9 i: @4 @8 CTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong5.39.217.76$ @7 \, `& |- K! R$ C
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think about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
3 c6 R9 r9 |7 |% L$ z" ? ?+ C3 pTVBNOW 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。
( X' k( U. x$ W7 s8 F5.39.217.76I know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |