21+50+15=86tvb now,tvbnow,bttvb: B2 R* w( |" | B F) V
why 86...
3 q% C4 j( e* r7 ctvb now,tvbnow,bttvbbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
; k& C* X3 Q" v- T \% }) R$ q公仔箱論壇then he giv bck his fren 50
7 G' S$ C+ F5 X% u1 _公仔箱論壇and the shoes cost is 15
5 X- z# B5 H" I3 S; |www3.tvboxnow.com/ p) M& B8 i$ f) D' c. N2 i
so total he loss is 86...
& r) D' Q/ J$ ^公仔箱論壇
( y: E: ]: q( ]& E公仔箱論壇[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |