21+50+15=86
2 g7 ]# v/ i k' B5.39.217.76why 86...
$ g/ k3 _* ]6 ~( F- K. c公仔箱論壇becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21' P: V8 F3 l% s
then he giv bck his fren 50公仔箱論壇4 l0 F7 ]* L. D4 e4 g5 C% m
and the shoes cost is 15
: o* U g v" E公仔箱論壇
* E; J9 a/ S* ^$ t' J4 S! u3 x9 @, eso total he loss is 86...
0 Q% L' k1 p' a( `" d0 U5.39.217.76
( X C) ?# \; k N# v _: H$ ~+ xtvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |