21+50+15=86TVBNOW 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。' P6 x/ s# z5 ]! a8 h$ a% N
why 86... + ]* j4 K6 l/ u" U+ p" O" Obecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21 7 C/ j N/ U- q K' Q Q; gthen he giv bck his fren 50www.tvboxnow.com' g. B7 d2 K' h* O4 h9 k/ H
and the shoes cost is 15/ t3 \8 v+ ]& x: I$ |: q0 q' A
公仔箱論壇3 e4 ^1 C0 ~# z& a3 u
so total he loss is 86... 6 L3 x$ I3 _( |) ]: _公仔箱論壇www.tvboxnow.com* t3 O0 C9 b9 |
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ]