21+50+15=86TVBNOW 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。! D2 v7 i& S; v5 x8 ?" E+ q+ k2 R
why 86...+ U8 o3 g8 Q2 g3 o/ w( [
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21 ) z2 P f& |" m+ O" Tthen he giv bck his fren 50: s) F) L3 r8 {
and the shoes cost is 15os.tvboxnow.com4 |$ J" p* u% i1 k) W
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so total he loss is 86...tvb now,tvbnow,bttvb( O$ w0 g' g4 ]