21+50+15=86
+ H, F" H' k* _4 Wtvb now,tvbnow,bttvbwhy 86...
7 c; {% ^. Z* ~0 x* T! xbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21tvb now,tvbnow,bttvb. F/ f d4 t1 m7 d- ~; J4 ?
then he giv bck his fren 50公仔箱論壇; X- ~ o# N( R
and the shoes cost is 155.39.217.76" u- l' r3 D9 F
) E. w- C2 d: p5 U" u
so total he loss is 86...公仔箱論壇4 H' _( \8 Z3 f
tvb now,tvbnow,bttvb7 ]' t; O, v! [: o) i
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |