21+50+15=86
( g, l' G# m. r/ }/ \5.39.217.76why 86...( ~! }( w4 R, g
becos he change 50 "small money" then giv bck to customer 29 and he keep the balance 21* w3 s! d; }: |, Z+ o$ [
then he giv bck his fren 50. g! {1 e$ Q7 x1 {1 H# _
and the shoes cost is 157 [' z& W# i- [* U3 P) x
8 X% [1 U. s0 o4 ntvb now,tvbnow,bttvbso total he loss is 86...
" ?% q4 v* b$ R) U9 t公仔箱論壇tvb now,tvbnow,bttvb. Z2 f. y9 {7 S
[ 本帖最後由 ooichse 於 2008-12-3 01:54 AM 編輯 ] |