21+50+15=86
: Z+ w+ t, C( H9 Z5 nwhy 86...5.39.217.76' P5 C2 ~5 J. g( U' B$ h. _
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
+ a3 z8 A7 V0 S/ \$ D: oTVBNOW 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。then he giv bck his fren 50tvb now,tvbnow,bttvb3 w/ E4 a+ H$ J: y
and the shoes cost is 15tvb now,tvbnow,bttvb) Y2 h7 z0 J, Y; S0 v/ o7 j& f
公仔箱論壇5 s/ T c7 d% Q2 B
so total he loss is 86...
* } ^8 {5 `- t. `- O: H4 H公仔箱論壇公仔箱論壇& M9 O$ I% V/ A
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |