21+50+15=86公仔箱論壇$ S; P6 A( B4 a W% o% M- i( [ {
why 86...
7 \2 `2 u0 Q$ t5 q9 u, K; zbecos 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。: G7 D: a! X2 b' y
then he giv bck his fren 50
# t% @! u0 y! `9 m2 ~1 K; band the shoes cost is 15
( Q$ z$ t3 e1 a1 Y( v公仔箱論壇公仔箱論壇" x8 r- m+ F7 D3 q
so total he loss is 86...公仔箱論壇: a, V8 A9 R$ g4 `$ `% B
/ A9 [ N, a# y4 j( ~/ f h[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |