21+50+15=86
2 E) e+ P; _' ^' ?# Q1 K" Rwww2.tvboxnow.comwhy 86...) n2 D1 s# g' X- V' b
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
* b$ ? [" X, o1 cwww2.tvboxnow.comthen he giv bck his fren 50
: R! z! h% l K0 E" uand the shoes cost is 15
) Q4 v/ \! g3 v8 }- |tvb now,tvbnow,bttvbtvb now,tvbnow,bttvb3 t% Q+ O" c" b* m
so total he loss is 86...公仔箱論壇) t5 y) E* u$ m& ?. x. y3 J
www2.tvboxnow.com" d1 k5 @2 t; l* c9 K) o
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |