21+50+15=86
8 S) ?+ L) y/ P6 s1 X; \3 I5 b0 ?why 86...# s5 X- ?+ J! |! Q& V7 B ?8 P
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21tvb now,tvbnow,bttvb V+ {4 L+ d3 h9 N. S+ x
then he giv bck his fren 50tvb now,tvbnow,bttvb5 F' T7 q. f4 M+ _' L9 K
and the shoes cost is 15公仔箱論壇* \/ a2 Y2 i: p( Q7 _ n7 N# V4 L( _
4 D& Q* ?" O: H) |6 `so total he loss is 86...5.39.217.76' b9 n9 g$ M) k$ |
5.39.217.76, n( v) u4 u+ M) h: S* D& k9 _( n! U
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |