21+50+15=86tvb now,tvbnow,bttvb* ?' N1 F2 G& _7 X, {6 R
why 86...公仔箱論壇) Z" t6 F! @8 p+ G
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21公仔箱論壇4 e$ v; U; r5 q5 h
then he giv bck his fren 50www3.tvboxnow.com# [+ D# S5 p8 c1 m" t: N o
and the shoes cost is 15- W2 N1 s7 S; i
公仔箱論壇- r' u0 d- W. s" g- n/ v3 X
so total he loss is 86...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。% @: t$ g0 j- T7 u3 W
$ B; Y$ J4 c8 ^7 [7 K$ \; ~5 l公仔箱論壇[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |