21+50+15=864 i9 n$ f0 k' E( a+ G9 `! c
why 86...
( B% ~' P, Q9 R r! r4 }% X% `) Bbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21* r6 B$ v3 U* p7 ]4 V) w& Y) T, ^
then he giv bck his fren 50% @8 D) i0 S* K
and the shoes cost is 152 ]# L0 o0 L: X
& @5 ^+ ?) K1 c: r% H3 G5 OTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。so total he loss is 86...
" x+ g' b! j! H0 qtvb now,tvbnow,bttvb1 t- V Z( N6 y# T" b& t$ l9 m" u0 b
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |