21+50+15=86
) p) O" z$ D3 A8 r" O+ ywhy 86...
# n8 l6 B* {; N7 I9 d6 ltvb now,tvbnow,bttvbbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
* J& U9 C H7 D" V+ \2 zthen he giv bck his fren 50% y/ r' ?8 j* a, c
and the shoes cost is 156 F# `, s0 |0 z6 m6 T
/ @7 K7 [6 d1 i
so total he loss is 86...公仔箱論壇; ]5 A: q8 O% h1 ~
公仔箱論壇( ]4 x* d& k3 D( S6 Q2 H
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |