21+50+15=86
S" P' [9 |0 ^+ n1 n5.39.217.76why 86...5.39.217.76+ L7 n2 r; O0 t& D9 G5 ]
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
- s2 S0 ?6 A; U7 M1 N( x) k2 @8 rthen he giv bck his fren 50公仔箱論壇' D/ e; {' o0 P
and the shoes cost is 15
8 J: Z0 u. s& Q4 Q4 Y3 o1 w& ]9 m ztvb now,tvbnow,bttvb9 U( O% L5 T, L" @/ ?& ~( g
so total he loss is 86...
) R4 U8 M3 @- T7 p6 i公仔箱論壇
$ V3 I" G9 T/ i6 v) \2 Ntvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |