21+50+15=86
1 m& ^. B: j# m* L1 ytvb now,tvbnow,bttvbwhy 86...5.39.217.77:8898; J* O9 @6 V" X! q3 v
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21" n+ V8 R8 i, e
then he giv bck his fren 50tvb now,tvbnow,bttvb" n+ J' T' i% n% i
and the shoes cost is 15tvb now,tvbnow,bttvb( A- Q7 ?( z" M
9 P3 F( ]8 [, r6 T3 W8 e; [% yso total he loss is 86...
& l) A. {! L; `* L6 w) B- R5.39.217.77:8898公仔箱論壇6 K Z/ L" Y3 e
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |