21+50+15=86
4 W& z% E/ Y3 Y) ^) |" ]why 86...www3.tvboxnow.com4 Q+ G; D& ^* I1 I A5 g% u3 Z
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
M; Y6 `7 f" y* P2 t) t u# _TVBNOW 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。then he giv bck his fren 50
2 n0 Z5 z* [% _: S7 M* k* q% Dwww3.tvboxnow.comand the shoes cost is 15
1 c% Q$ Q' n+ }* V/ F, l: t u, 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。3 }, G9 M. I; \1 N
so total he loss is 86...www3.tvboxnow.com! {# z% ~( \1 z7 }
tvb now,tvbnow,bttvb$ M' r0 I+ R7 O! I
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |