21+50+15=86
( {, }6 W3 t7 |why 86...5.39.217.76! @+ I: o: ?* {& [4 R9 v
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
& e2 \# K* u8 M; F' P% @then he giv bck his fren 505.39.217.764 Q+ `: l% K- Z7 G5 |2 F
and the shoes cost is 15& o0 g8 v2 o' v+ R
$ Z m/ Q4 z5 [- j" ^4 T0 _so total he loss is 86...5.39.217.76( Q. Q p6 @, T* \& J$ q
tvb now,tvbnow,bttvb! i5 L* K& G6 A: @
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |