21+50+15=86www.tvboxnow.com# F1 t% f/ s. m) }9 I
why 86...
: o. |' L& Q( QTVBNOW 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。becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21; P0 C6 @: x6 W v* b7 {$ K
then he giv bck his fren 50
8 Y7 ~5 Q$ S' b公仔箱論壇and the shoes cost is 15www.tvboxnow.com Q7 \; |6 S: a/ m. q
% _& I0 N3 @) e h- r9 y0 }1 i8 Y
so total he loss is 86...0 y7 N! Q. S8 l( G* \4 m5 D
5 l3 W: G7 `" f& l; B/ Qtvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |