21+50+15=86tvb now,tvbnow,bttvb" n- s9 V6 w, i0 Z( c+ K" B
why 86...
, W K3 Y& h* v7 b- n' `5.39.217.76becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
% u9 Y% M% I& T; F5.39.217.76then he giv bck his fren 50
1 Z1 @2 A! {' v* L5.39.217.76and the shoes cost is 15
; h0 [% o. O* ^) m: g* uTVBNOW 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。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。" K; F! t% x7 Q& o7 e" Q2 N
so total he loss is 86...
, F$ I2 z( \1 c m+ A; N$ [公仔箱論壇' Y' A6 J8 Q4 B
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |