21+50+15=86
3 G/ E/ u0 J! Q) ], q5 a6 \tvb now,tvbnow,bttvbwhy 86...; L2 T8 U+ a6 w: p
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21tvb now,tvbnow,bttvb1 `- U) g( w2 p. {5 q
then he giv bck his fren 50
7 v7 X/ C3 }1 S4 o w, f公仔箱論壇and the shoes cost is 15
; p8 o/ K! H3 i$ S) itvb now,tvbnow,bttvb公仔箱論壇3 v# V% [+ L& t( i& d
so total he loss is 86...
% u) O4 C4 K$ P( q t5.39.217.76, q" J; ~; J- S1 w" P. b
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |