21+50+15=86
9 X% H5 f3 q+ F: h/ E$ HTVBNOW 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。why 86...公仔箱論壇+ k; [. C" E8 g
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21tvb now,tvbnow,bttvb6 `& w' z- ]8 J+ ?5 U0 @' X7 P
then he giv bck his fren 50
. C" d# P) M4 A* T2 bTVBNOW 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。and the shoes cost is 15tvb now,tvbnow,bttvb$ }( E& k0 M: E* F& A
8 l ]" r' r9 H/ J
so total he loss is 86...
3 a+ }) L9 O$ }. ktvb now,tvbnow,bttvb5.39.217.76$ n6 G4 a/ u1 m6 r
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |