21+50+15=86
& T" D1 x* G8 z3 ]8 x' dwhy 86...4 R1 A: x' P4 d
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
- v; ?5 t o c7 R8 G ?% V* @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。then he giv bck his fren 50
8 H8 m7 }' N" ^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。and the shoes cost is 15公仔箱論壇$ v- j/ |) s/ N- f2 Y2 w M
: m4 D9 ^0 b8 h% {www3.tvboxnow.comso total he loss is 86...公仔箱論壇/ `- o, @4 |& ~7 g
, K0 d# l: F2 T0 Y1 b5 ^- `$ Pwww3.tvboxnow.com[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |