21+50+15=865.39.217.77:88986 X/ F* _' Y1 Q% W- K
why 86...
, [! b+ x; U1 I: p& {1 _5.39.217.77:8898becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
! q1 _5 k+ i2 o1 M- n) t/ e5.39.217.77:8898then he giv bck his fren 50
* i1 K& A/ B1 a) f9 m& Zand the shoes cost is 15tvb now,tvbnow,bttvb) d) C" g1 q, C
公仔箱論壇 O% R. G: E9 j5 f1 w8 s% P
so total he loss is 86...+ |3 O# c. O( ` q7 @- h
0 J& h9 Z7 P% ^' Y- R& T9 @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。[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |