21+50+15=86& q: G/ B* q; _7 D3 i
why 86...
" {4 [0 p5 v3 ~# J6 k/ gtvb now,tvbnow,bttvbbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21公仔箱論壇. I, N3 N) P; @+ Z9 D! J
then he giv bck his fren 50tvb now,tvbnow,bttvb+ I4 A$ n0 S+ U1 j' |2 x( @
and the shoes cost is 15. S3 A, X4 j3 Q, s# [* R. ]
' [- I: ]5 E) ?4 |
so total he loss is 86...+ ?! k4 d. k* k" q/ Z* ]/ D- b0 w
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& Y0 D& R4 u1 B+ D: o3 _
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |