21+50+15=86
1 L0 A5 D# o$ d. ftvb now,tvbnow,bttvbwhy 86..." i$ O# w9 \4 g9 k- W7 A
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21公仔箱論壇: ^1 l) N* S z" c, `
then he giv bck his fren 50
# q/ D% D$ d: N. X# q8 b3 `5.39.217.77and the shoes cost is 15tvb now,tvbnow,bttvb6 e' {3 l3 b, D
TVBNOW 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。( t7 V9 f( R1 t6 r. h# {3 ~( }
so total he loss is 86...tvb now,tvbnow,bttvb- Q2 X: S: p8 Z- K( u% M# s
5.39.217.77, V4 T$ A& U( v
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |