21+50+15=86
. {; p% x4 o7 Y) f% f5 g8 \( p8 O$ b公仔箱論壇why 86...
" n; i# P5 _' L: d0 K+ M5 B公仔箱論壇becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
8 I/ @: @! g( `/ p1 _- c$ F公仔箱論壇then he giv bck his fren 50TVBNOW 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。+ `2 m+ V7 T# v |$ e% }' P
and the shoes cost is 15
7 J- z" x) B- U. jtvb now,tvbnow,bttvb. M! G, l8 Z) p9 t/ m: J N* S
so total he loss is 86...
' P8 a/ m, }; L. u* r6 T' _公仔箱論壇& i1 v5 e2 }' G$ ?) l
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |