原帖由 prozzy 於 2007-5-18 23:05 發表。 公仔箱論壇8 C% y$ ]: s& j+ J3 @. v
the answer is -$97 for sure.
" e( [: L* D3 Q a7 {+ W5.39.217.77:8898Think about it this way
6 c4 ^( c, h. X2 J" ITVBNOW 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) if the 100 bucks is not a fake one, the store owner will gain $3 ($21-$18)
* T; e2 t- L3 R3 N公仔箱論壇2) Now, the owner discovered that the 100 bucks is fake. You can th ... 公仔箱論壇) Q" ^, V) f: c& _
) a" D! ~: n6 [1 eTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
' D' x' j& T9 {, A5.39.217.77:88981) very good, it the 100 bucks is real, your answer is correct, but it is fake, so your answer is wrong
5 K* z* }+ b* e' Z' Q4 o2 N$ l tvb now,tvbnow,bttvb7 f2 s, h. z6 P1 \( ]$ c4 P8 n
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.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。' _; U3 `& t/ f; k' I0 U
! a2 Y" m# C, A# jtvb now,tvbnow,bttvbI know the answer becoz it really happening to my friend in his store in real LIFE, it can not be wrong. |