21+50+15=86
# b ]; |$ q+ v( M- q7 P+ awhy 86...公仔箱論壇9 e" `/ s x. c" r8 r; O
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21* J8 D, F& q1 v) g4 A4 w! _ o( A6 @
then he giv bck his fren 50
+ e+ k1 A& K$ ]www3.tvboxnow.comand the shoes cost is 15TVBNOW 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。/ T) |* H, [7 h M& }. S
9 `7 V; J* E L2 o. m' Uwww3.tvboxnow.comso total he loss is 86...
& a- H8 P0 [! P: q2 \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。2 W6 G4 l$ ~( `, a$ F; @2 i7 h. W, x3 _
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |