21+50+15=86
$ }7 s7 X1 P) @ mwhy 86...
( B5 a6 F+ O" D, u5.39.217.76becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
l) ?) q1 r; o- M% \then he giv bck his fren 50
( j& k8 l! G7 s. Q5 G公仔箱論壇and the shoes cost is 15
& M! e' z' a8 Qtvb now,tvbnow,bttvb
$ @% u) v, d% E8 G* L3 j6 @5.39.217.76so total he loss is 86...tvb now,tvbnow,bttvb8 O9 h' ?( ]* e8 s
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[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |