21+50+15=86
* W( O% }4 c" b# ltvb now,tvbnow,bttvbwhy 86...
3 d$ Y5 L7 B) m- h& otvb now,tvbnow,bttvbbecos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
5 B: z) t" z% X7 l公仔箱論壇then he giv bck his fren 50
4 j/ y+ g3 l8 Band the shoes cost is 155 _8 {1 [; I( d' l, ^& E
2 C# Z) I, D) w5 q5.39.217.77so total he loss is 86...
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[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |