21+50+15=86 
; T! R+ C5 s: ~9 atvb now,tvbnow,bttvbwhy 86...  r0 f9 F$ \8 T) W8 I' E* `6 w8 F: _ 
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21tvb now,tvbnow,bttvb/ r6 I3 J5 t* m+ q3 } 
then he giv bck his fren 505.39.217.77:8898! }, k0 T. [7 @7 e6 q 
and the shoes cost is 15公仔箱論壇) `9 [, B6 ]# g% I! n8 w) P  v3 g% j 
! G2 Z2 J8 j( m+ |1 L 
so total he loss is 86... 
9 P( `. `1 G. h1 h9 Rtvb now,tvbnow,bttvb 
8 Z  u- i; k+ r: g* n0 g0 ~[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |