21+50+15=86
( U" i d' e5 w; O4 `why 86...os.tvboxnow.com7 P$ j& j# U. @6 r3 O+ \
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
2 k8 W' O- s8 {# X* Sthen 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。* o- }" R Q+ Q T* o3 `
and the shoes cost is 15. ?1 W3 ^8 F0 ~' n2 {7 d
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。7 ~% J8 R- [$ |
so total he loss is 86...tvb now,tvbnow,bttvb4 j6 Q8 r0 t" I# C J$ l* R- Q: G
6 Z3 q3 Q9 O9 P$ V# k
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |