21+50+15=86. X* b" N3 J2 @
why 86...
. I: _/ P5 ^/ D' X8 c3 `becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
6 f# F9 Z' U* u ? yTVBNOW 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
7 i& Q+ ?9 _! @8 K+ s公仔箱論壇and the shoes cost is 152 J ]: m b% R
/ }4 A! {/ x s0 Mso total he loss is 86...
1 D1 \$ P, `% x公仔箱論壇
6 h, ~3 J/ l6 u+ n$ R8 M" }tvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |