21+50+15=865.39.217.764 Y2 k# z S5 I* P2 G# o. Y9 s+ q
why 86...- E3 a/ `( X: s/ o
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21( W; D0 |! a- ^" s! e' h: N- ?
then he giv bck his fren 50
- q6 H `( h- {5 fand the shoes cost is 15
9 V. D. o+ O$ n# t% `( b# f公仔箱論壇
% m& m- O7 _ I; R, P/ s0 T8 _5 xtvb now,tvbnow,bttvbso total he loss is 86...
# f: X2 }3 I2 a, [# G- K/ X5.39.217.766 a, s" W: j. U, g' a
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |