原帖由 prozzy 於 2007-5-18 23:05 發表。 6 ]% x/ G$ ]+ q
the answer is -$97 for sure.
+ r; k5 A* Z6 m) {7 ros.tvboxnow.comThink about it this way
4 h. l0 n2 E- n' s; q5 \8 k1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
$ c: K4 g8 o* J/ G7 S* Cos.tvboxnow.com2) Now, the owner discovered that the 100 bucks is fake. You can th ... $ v/ r# j+ f% F' _; G
- J$ v4 n: Y) x. V 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。4 J6 j9 ]( ^4 N" R
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong$ [/ [, t- B1 C' h
# J" V0 H G* O) D5 b9 Ros.tvboxnow.comthink about it, when the bill is fake, and he gave him $79 change back, that is -79 already, it means the 100 on his hand is equal to 0 (Zero), how did he makes profit when he got a fake bills, then he need to pay another real 100 dollars bill to his neighbor, that another -100, plus the product he lost, thats another 18 dollars, Do Not Even Mention the 3 dollars, there is no profit he can make when he got a fake bill.
9 U/ b- c3 A8 Y7 \% }+ r/ Z$ htvb now,tvbnow,bttvb
7 T7 O+ W+ I! S' O) Ytvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |