21+50+15=86
( b! Y9 c5 t: M2 T& E. I公仔箱論壇why 86...tvb now,tvbnow,bttvb" A0 B8 V6 ^0 Q9 H& F8 J
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21公仔箱論壇) Q+ M" p3 H9 ^+ }
then he giv bck his fren 50
7 e! g+ _6 _# ]4 P6 j. \1 G# c, n公仔箱論壇and the shoes cost is 15
4 g3 N X. y/ Ttvb now,tvbnow,bttvb
0 z, G5 y9 d6 {) A' B6 Z$ [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。so total he loss is 86...+ o: _2 N5 a& o Y+ S
tvb now,tvbnow,bttvb' _5 k; O, f- p- ?. ]3 `5 B
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |