21+50+15=86
7 g. P9 C& z' ?, Q w% M8 \公仔箱論壇why 86...5.39.217.77:88984 e6 r: s) h! o
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
- A$ ]& U* a" W6 a2 O) X5 dthen 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 i& P* y. T' ]
and the shoes cost is 15公仔箱論壇: n. v" P" M4 k2 O
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。. [! K4 K! e" _+ [( l
so total he loss is 86...tvb now,tvbnow,bttvb5 U: ~% \' s# O$ q2 `& o
) c8 i) w( M& N7 M1 Z[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |