21+50+15=86
$ D2 J$ r# o+ I& @9 Q. Atvb now,tvbnow,bttvbwhy 86...( Z# M$ b+ s( i; _: h* S2 [/ O/ F
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21
7 g% t X! Q# N) @tvb now,tvbnow,bttvbthen he giv bck his fren 50tvb now,tvbnow,bttvb5 e4 B6 {7 N- |8 m/ v9 `- o4 G% c" W1 i
and the shoes cost is 15
& Q/ p6 x) `! x+ B; Rtvb now,tvbnow,bttvb7 Z K9 c3 L8 m1 d7 K0 o
so total he loss is 86...
7 \( o+ s# I+ k+ U' o) c
5 U8 C2 q) z6 [7 b, I) ktvb now,tvbnow,bttvb[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |