21+50+15=86
0 o+ `$ `. t- _$ u5.39.217.77why 86...
, d3 X, w* ~; g; ?" Rbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
& \6 F8 i1 q' l; ` j" v. S* q5.39.217.77then 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。4 D+ ^% F! e; {) ]' a0 k
and the shoes cost is 15tvb now,tvbnow,bttvb& i. t: I' U" f; N. X0 T
公仔箱論壇) p# `) S) h4 Z$ u* M8 e8 |7 q
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。5 f8 @# |4 E% [( k- L
- N' D2 ]: T1 C1 M5 n" a5.39.217.77[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |