21+50+15=86
2 { S' j" p6 b! |1 Btvb now,tvbnow,bttvbwhy 86...; p! I* T& d2 L3 Z1 e: \! Y
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
% }3 z1 @ n% `* q% g2 {then he giv bck his fren 50
6 O2 P) E" m0 V" b5 O' u" D" p5 vwww2.tvboxnow.comand the shoes cost is 15www2.tvboxnow.com: c( C$ w1 g4 j! w# O
0 A$ m* ]2 ]+ Q3 d U- R. _/ }www2.tvboxnow.comso total he loss is 86...
- `/ R( Q2 {2 Y0 twww2.tvboxnow.com
+ q9 E$ h W8 m6 u( F) |www2.tvboxnow.com[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |