21+50+15=865.39.217.76& ~) W$ l% b+ x
why 86...公仔箱論壇9 ^. j, y. f4 M$ g5 u$ S) R
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 219 T# V5 l; b0 G# m& } N% c
then he giv bck his fren 503 Y1 U* ]$ `/ R
and the shoes cost is 153 R2 X! U r t2 V' T; { V
; P8 h3 @" [) L0 d5.39.217.76so total he loss is 86...tvb now,tvbnow,bttvb& C+ ?4 F/ X1 x) l. a6 v' X" o) Z% j
# d+ b! v0 M! B/ X- @# L8 n8 g[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |