21+50+15=86
7 J* ^. ^- Q! Z0 B" mwhy 86...tvb now,tvbnow,bttvb$ N0 {% O- H" }9 c) c C7 o$ {
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
' Y8 S, [ K' V7 Z5 r- H公仔箱論壇then he giv bck his fren 50tvb now,tvbnow,bttvb) r: M' x {. g: d' M
and the shoes cost is 15www.tvboxnow.com; A+ s3 E, a1 f7 C* j6 A; E4 c( }+ p( @ Q
) }/ [. R: p" fTVBNOW 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...$ M% ~) {1 ? ~" f3 f
tvb now,tvbnow,bttvb0 R5 z8 z4 N a% J& `: S0 E
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |