21+50+15=865.39.217.77' {% v- f; t( X1 I: |7 o
why 86...
; Z0 h3 [$ G7 k3 h4 u& n% P4 J5.39.217.77becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21TVBNOW 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。) Z! p9 v8 _9 e1 R2 Y
then he giv bck his fren 50tvb now,tvbnow,bttvb, y/ s7 Y% v8 D* O
and the shoes cost is 15
; y& f) H# L: K* x( @
7 ?. K! u7 d x' m5.39.217.77so total he loss is 86...
- @" T- ~' m8 p9 F8 V8 m" Z, S5.39.217.77TVBNOW 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。& W/ b [6 s! u
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |