21+50+15=86
& m9 l- [$ g r7 ?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...2 w( n" r5 Y5 \" r" e
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
7 }+ }0 R4 C+ C0 C- Q公仔箱論壇then he giv bck his fren 50公仔箱論壇! b2 {8 \8 C* M4 q% y
and the shoes cost is 15
) ?2 K; o4 H, h$ ttvb now,tvbnow,bttvb公仔箱論壇% g8 } h( W3 M6 p( q5 |
so total he loss is 86...
6 B: z) X% Z* e! O! E: C
( u- u. ^8 s! l, b, _9 C7 F2 F[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |