21+50+15=86
+ _7 P: ~5 S* R/ vwhy 86...
, `( r( o* _) F0 @+ ybecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21% H1 `5 s u. Q- G3 w
then he giv bck his fren 50TVBNOW 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。8 |2 `& x- y( }
and the shoes cost is 15
+ G# n/ Q6 n8 @# j7 y& `公仔箱論壇3 D& }) a& r, r# e7 x7 o9 q
so total he loss is 86...% m; `# V6 I* I0 E% c7 j
tvb now,tvbnow,bttvb- |4 K" h4 |8 c; \
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |