21+50+15=86
|2 N2 M' G' Z0 Y7 T& Xwhy 86...
- L$ p' |8 H, V" m2 Q- Y. C! X, I公仔箱論壇becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21tvb now,tvbnow,bttvb0 f- C. K6 U/ f% v* }
then he giv bck his fren 50tvb now,tvbnow,bttvb$ ~3 \ \! ?$ P9 K$ M
and the shoes cost is 15公仔箱論壇5 F/ ?! ~/ J, W! G5 g; g
|. P5 p* ^9 J5 ~: l: Btvb now,tvbnow,bttvbso total he loss is 86...5.39.217.76: F# x& \6 }' P/ H: L0 J5 b
7 r6 M1 H p+ @4 s
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |