21+50+15=86
: B5 X- E: N+ p: V; ]$ iwhy 86...tvb now,tvbnow,bttvb/ C' o- H* E) [5 Q/ O
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21TVBNOW 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。; W0 p9 y3 h, @6 N4 x
then he giv bck his fren 50- E: L% J4 b. f: u
and the shoes cost is 15tvb now,tvbnow,bttvb T7 Q e- M2 |, K3 D
2 d2 j) t+ l% ?$ k: tTVBNOW 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...0 I3 [3 G- U, h
: b" i0 m% U" w7 I1 m+ J# N5.39.217.77:8898[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |