21+50+15=86
+ y$ G+ h1 S% C" G. X$ @4 S. xtvb now,tvbnow,bttvbwhy 86...+ H$ e3 h7 y$ Y. P
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
1 c2 g" I+ a/ B% i9 l3 Ithen he giv bck his fren 50
6 o, i3 ? `0 x3 g n+ a, Wand the shoes cost is 15% p0 A7 H& ^4 j( q. c2 F$ u; a
* c) i$ D5 z0 {0 e, ^0 {. @% jso total he loss is 86...
3 R. t, ]9 I7 l6 |# N) Gtvb now,tvbnow,bttvb公仔箱論壇7 r0 T2 i8 w, L9 v! ?
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |