原帖由 prozzy 於 2007-5-18 23:05 發表。 
6 P4 J3 {5 n1 J+ z& lthe answer is -$97 for sure.
! }0 C9 P$ f/ F) {tvb now,tvbnow,bttvbThink about it this way
* J* U; H3 W" t( s. k1) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
' G3 G# }7 p7 l( X* r$ {5 J- ptvb now,tvbnow,bttvb2) Now, the owner discovered that the 100 bucks is fake. You can th ...
os.tvboxnow.com# z# b0 `& U" t
1) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong) g( W+ a9 W5 h+ @4 |* J+ f, c
tvb now,tvbnow,bttvb+ e8 a/ a6 y1 e: N9 f3 t. J6 U
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.
6 r3 Y/ r8 s! {7 _: r( d5 @公仔箱論壇
: K4 ^4 ?& X% ?+ J) UI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |
發表於 2007-7-10 05:18 PM
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發表於 2007-7-11 03:19 PM
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