21+50+15=86
" b8 O1 K7 l8 S' v% j- ^why 86...8 D4 I$ u, [0 M( n: a1 ^, L
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21TVBNOW 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。$ U) l8 i& o8 s M$ u; b3 T
then he giv bck his fren 50
! v* t& ^' \% P7 BTVBNOW 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。and the shoes cost is 15
" ?$ f, `7 x0 i" x, q' y3 K' N7 G0 R2 G4 Z1 |
so total he loss is 86...5.39.217.76. F# y% p# Y# x) M- ?0 ~
' l0 k8 X; V8 P& e5 @2 f" m9 N
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |