21+50+15=864 ?, O7 O, E5 X" x) G% J
why 86...
0 f b/ v, k, N# iTVBNOW 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。becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
9 ^* g: n# b& e6 b公仔箱論壇then he giv bck his fren 50公仔箱論壇9 P% H9 E+ X& O! O+ V: Q
and the shoes cost is 15
( U2 l! r6 s! T: ] T% m8 T. Jtvb now,tvbnow,bttvb公仔箱論壇/ e7 ~! z2 R& k2 a7 p
so total he loss is 86...9 y9 O8 h" e, c
3 ]' j3 ? a) _( e8 [1 R公仔箱論壇[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |