21+50+15=86
- a7 K! M: a- q4 E& fwhy 86...
( k$ a% ^0 g# w. |4 M3 l1 R5.39.217.76becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21$ X I+ a2 c$ @9 [" y; i
then he giv bck his fren 50tvb now,tvbnow,bttvb2 K U' x& l, P7 E
and the shoes cost is 15
$ f3 ~! o' B2 Y2 J* S/ \3 v
9 ` w$ B8 ?) D w5.39.217.76so total he loss is 86...1 P* a' U" A, z4 q+ E4 f: j+ h1 J
9 U( C% G0 i$ q: M
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |