21+50+15=86
1 E8 m1 v- V; s$ j* \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。why 86...
, |8 f4 [1 C3 A0 R& Etvb now,tvbnow,bttvbbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
$ j- p; [# k$ v6 r6 zthen he giv bck his fren 50公仔箱論壇# ]/ ]; D( T5 H9 u2 {
and the shoes cost is 15
+ v: j- T0 h0 U' C' `6 |0 \www2.tvboxnow.com
# W! \/ N0 t7 P+ V8 M+ @www2.tvboxnow.comso total he loss is 86...- b: w, |# D# V
公仔箱論壇0 a( E$ h# }$ D6 A/ V0 k2 }' A3 U
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |